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<?xml version="1.0" encoding="UTF-8"?>
<Document xmlns="urn:iso:std:iso:20022:tech:xsd:remt.001.001.06">
  <RmtAdvc>

    <!-- Slide 6: GroupHeader — who sent it and when -->
    <GrpHdr>
      <MsgId>REMT-2026-00099</MsgId>
      <CreDtTm>2026-03-17T09:00:00</CreDtTm>
      <InitgPty>
        <Nm>Beneficial Strategies LLC</Nm>
        <Id><OrgId><AnyBIC>BSTRUSXX</AnyBIC></OrgId></Id>
      </InitgPty>
      <MsgRcpt>
        <Nm>Acme Corp</Nm>
        <Id><OrgId><AnyBIC>ACMEUSNY</AnyBIC></OrgId></Id>
      </MsgRcpt>
    </GrpHdr>

    <!-- Slide 8: RemittanceInformation — what this payment covers -->
    <RmtInf>
      <RmtId>RMTINF-001</RmtId>

      <!-- Unstructured: human-readable note -->
      <Ustrd>Payment for invoices INV-2026-042 and INV-2026-043</Ustrd>

      <!-- Structured: machine-readable invoice references -->
      <Strd>
        <RfrdDocInf>
          <Tp><CdOrPrtry><Cd>CINV</Cd></CdOrPrtry></Tp>
          <Nb>INV-2026-042</Nb>
          <RltdDt><Dt>2026-03-01</Dt></RltdDt>
        </RfrdDocInf>
        <RfrdDocAmt>
          <RmtAmtAndTp>
            <Tp><CdOrPrtry><Cd>CINV</Cd></CdOrPrtry></Tp>
            <Amt Ccy="USD">2500.00</Amt>
          </RmtAmtAndTp>
        </RfrdDocAmt>
        <Invcr>
          <Nm>Beneficial Strategies LLC</Nm>
        </Invcr>
        <Invcee>
          <Nm>Acme Corp</Nm>
        </Invcee>
        <AddtlRmtInf>Consulting services Q1 2026</AddtlRmtInf>
      </Strd>

      <Strd>
        <RfrdDocInf>
          <Tp><CdOrPrtry><Cd>CINV</Cd></CdOrPrtry></Tp>
          <Nb>INV-2026-043</Nb>
          <RltdDt><Dt>2026-03-10</Dt></RltdDt>
        </RfrdDocInf>
        <RfrdDocAmt>
          <RmtAmtAndTp>
            <Tp><CdOrPrtry><Cd>CINV</Cd></CdOrPrtry></Tp>
            <Amt Ccy="USD">2250.00</Amt>
          </RmtAmtAndTp>
        </RfrdDocAmt>
        <AddtlRmtInf>Software license renewal</AddtlRmtInf>
      </Strd>

      <!-- Links back to the original payment instruction -->
      <OrgnlPmtInf>
        <OrgnlMsgId>PAIN001-2026-00077</OrgnlMsgId>
        <OrgnlMsgNmId>pain.001.001.12</OrgnlMsgNmId>
        <OrgnlCreDtTm>2026-03-17T08:55:00</OrgnlCreDtTm>
      </OrgnlPmtInf>
    </RmtInf>

  </RmtAdvc>
</Document>

using System;
using System.Collections.Generic;
using System.Xml.Serialization;

namespace Iso20022.Remt.V06
{
    // Root document — namespace ties it to remt.001.001.06
    [XmlRoot("Document", Namespace = "urn:iso:std:iso:20022:tech:xsd:remt.001.001.06")]
    public class Document
    {
        [XmlElement("RmtAdvc")]
        public RemittanceAdviceV06 RemittanceAdvice { get; set; }
    }

    // Top-level message
    public class RemittanceAdviceV06
    {
        [XmlElement("GrpHdr")]
        public GroupHeader122 GroupHeader { get; set; }

        [XmlElement("RmtInf")]
        public List<RemittanceInformation23> RemittanceInformation { get; set; } = new();
    }

    // GroupHeader: who sent it, when, routing
    public class GroupHeader122
    {
        [XmlElement("MsgId")]
        public string MessageIdentification { get; set; }   // Required, Max35Text

        [XmlElement("CreDtTm")]
        public DateTime CreationDateTime { get; set; }       // Required, ISODateTime

        [XmlElement("InitgPty")]
        public PartyIdentification272 InitiatingParty { get; set; } // Required

        [XmlElement("MsgRcpt")]
        public PartyIdentification272 MessageRecipient { get; set; } // Optional
    }

    // RemittanceInformation: one block per payment being explained
    public class RemittanceInformation23
    {
        [XmlElement("RmtId")]
        public string RemittanceIdentification { get; set; }  // Optional, Max35Text

        // Free-text description — quick and simple, but not machine-readable
        [XmlElement("Ustrd")]
        public List<string> Unstructured { get; set; } = new();

        // Structured invoice references — preferred for A/R automation
        [XmlElement("Strd")]
        public List<StructuredRemittanceInformation18> Structured { get; set; } = new();

        [XmlElement("OrgnlPmtInf")]
        public OriginalPaymentInformation10 OriginalPaymentInformation { get; set; } // Required
    }

    // Structured remittance: links payment to specific invoices
    public class StructuredRemittanceInformation18
    {
        [XmlElement("RfrdDocInf")]
        public List<ReferredDocumentInformation8> ReferredDocumentInformation { get; set; } = new();

        [XmlElement("RfrdDocAmt")]
        public RemittanceAmount4 ReferredDocumentAmount { get; set; }

        [XmlElement("CdtrRefInf")]
        public CreditorReferenceInformation3 CreditorReferenceInformation { get; set; }

        [XmlElement("Invcr")]
        public PartyIdentification272 Invoicer { get; set; }  // Who issued the invoice

        [XmlElement("Invcee")]
        public PartyIdentification272 Invoicee { get; set; }  // Who received the invoice

        [XmlElement("TaxRmt")]
        public TaxData1 TaxRemittance { get; set; }

        [XmlElement("GrnshmtRmt")]
        public Garnishment4 GarnishmentRemittance { get; set; }

        // Up to 3 additional free-text notes (Max 3 per spec)
        [XmlElement("AddtlRmtInf")]
        public List<string> AdditionalRemittanceInformation { get; set; } = new();
    }

    // ReferredDocumentInformation: identifies the invoice being paid
    public class ReferredDocumentInformation8
    {
        [XmlElement("Tp")]
        public ReferredDocumentType4 Type { get; set; }  // e.g. CINV = Commercial Invoice

        [XmlElement("Nb")]
        public string Number { get; set; }               // Invoice number, Max35Text

        [XmlElement("RltdDt")]
        public DateAndType1 RelatedDate { get; set; }    // Invoice date
    }

    // RemittanceAmount4: amounts being paid for this document
    public class RemittanceAmount4
    {
        [XmlElement("RmtAmtAndTp")]
        public List<DocumentAmount1> RemittanceAmountAndType { get; set; } = new();

        [XmlElement("AdjstmntAmtAndRsn")]
        public List<DocumentAdjustment1> AdjustmentAmountAndReason { get; set; } = new();
    }

    // Supporting types
    public class PartyIdentification272
    {
        [XmlElement("Nm")]
        public string Name { get; set; }

        [XmlElement("Id")]
        public Party38Choice Id { get; set; }
    }

    public class OriginalPaymentInformation10
    {
        [XmlElement("OrgnlMsgId")]
        public string OriginalMessageIdentification { get; set; }

        [XmlElement("OrgnlMsgNmId")]
        public string OriginalMessageNameIdentification { get; set; }

        [XmlElement("OrgnlCreDtTm")]
        public DateTime? OriginalCreationDateTime { get; set; }
    }
}

using DocumentFormat.OpenXml;
using DocumentFormat.OpenXml.Packaging;
using DocumentFormat.OpenXml.Presentation;
using A = DocumentFormat.OpenXml.Drawing;

namespace Iso20022.Training
{
    public class RemittanceTrainingDeckGenerator
    {
        private static readonly string[] SlideData = new[]
        {
            ("What Is a Remittance?",
             "A remittance is the structured explanation of WHY a payment is being made.\n\n" +
             "Without it: payer sends $4,750. Payee has 12 open invoices. Which ones are paid?\n\n" +
             "With remt.001: payer says exactly which invoices are covered, the amounts, and the references.\n\n" +
             "Speaker note: Ask the room — has anyone had to manually match a payment to invoices? That's the problem this solves."),

            ("Where RemittanceAdvice Fits",
             "ISO 20022 Business Area: REMT (Remittance)\n\n" +
             "Message ID: remt.001.001.06\n" +
             "Namespace: urn:iso:std:iso:20022:tech:xsd:remt.001.001.06\n\n" +
             "Sent separately from the payment itself (pain.001) or alongside it.\n" +
             "The payment moves money. The remittance explains it.\n\n" +
             "Speaker note: Show the XSD at iso20022.org — this is the contract both sides implement."),

            ("The Business Case",
             "Accounts Receivable teams spend hours matching payments to invoices manually.\n\n" +
             "remt.001 makes this automatic:\n" +
             "  • Machine-readable invoice references\n" +
             "  • Exact amounts per invoice\n" +
             "  • Tax and adjustment details\n" +
             "  • Creditor reference for cross-system lookup\n\n" +
             "ROI: reduces payment-to-close time from days to minutes.\n\n" +
             "Speaker note: If your client runs SAP or Oracle Financials, they already expect this format."),

            ("Message Identity",
             "Full message ID: remt.001.001.06\n" +
             "  remt  = business area (Remittance)\n" +
             "  001   = message functionality\n" +
             "  001   = flavour\n" +
             "  06    = version 6\n\n" +
             "XSD schema: https://www.iso20022.org/sites/default/files/documents/messages/remt/schemas/remt.001.001.06.xsd\n\n" +
             "Always validate your output against this schema before transmission.\n\n" +
             "Speaker note: Version 06 is current. Never build against v01 — the spec has evolved significantly."),

            ("Message Hierarchy",
             "RemittanceAdviceV06\n" +
             "  ├── GroupHeader (1..1)           — message envelope, sender/receiver\n" +
             "  │     ├── MessageIdentification   — unique message ID (required)\n" +
             "  │     ├── CreationDateTime        — timestamp (required)\n" +
             "  │     ├── InitiatingParty         — who sent it (required)\n" +
             "  │     └── MessageRecipient        — who receives it (optional)\n" +
             "  ├── RemittanceInformation (1..*) — one block per payment explained\n" +
             "  │     ├── Unstructured            — free text (0..*)\n" +
             "  │     ├── Structured              — invoice references (0..*)\n" +
             "  │     └── OriginalPaymentInfo     — links back to pain.001 (required)\n" +
             "  └── SupplementaryData (0.*)      — extensibility hook\n\n" +
             "Speaker note: The 1..* on RemittanceInformation means one message can explain multiple payments at once."),

            ("GroupHeader Deep Dive",
             "Required fields — your message is rejected without these:\n\n" +
             "  MsgId       Max35Text    Point-to-point unique reference\n" +
             "  CreDtTm     ISODateTime  Format: 2026-03-17T09:00:00\n" +
             "  InitgPty    Party        Sender identity (Name + BIC or IBAN)\n\n" +
             "Optional but important:\n" +
             "  MsgRcpt     Party        Intended recipient\n" +
             "  FwdgAgt     Institution  If routing through an intermediary\n" +
             "  CpyInd      Code         CODU/DUPL/COPY — mark duplicates!\n\n" +
             "Speaker note: MsgId must be unique per sender. Use a UUID or timestamp-based ID. Duplicates cause reconciliation chaos."),

            ("Unstructured Remittance",
             "Use <Ustrd> when:\n" +
             "  • Quick integration, human-readable only\n" +
             "  • Legacy receiver systems that parse free text\n" +
             "  • Supplementary notes alongside structured data\n\n" +
             "Example:\n" +
             "  <Ustrd>Payment for INV-2026-042 and INV-2026-043</Ustrd>\n\n" +
             "Limitations:\n" +
             "  • Not machine-readable — A/R still has to parse it manually\n" +
             "  • Max 140 characters\n" +
             "  • Cannot reference amounts, dates, or adjustment reasons\n\n" +
             "Speaker note: Think of Unstructured like the memo field on a cheque. Fine for humans; useless for automation."),

            ("Structured Remittance",
             "Use <Strd> for full A/R automation. Key elements:\n\n" +
             "  RfrdDocInf   Invoice number, type code, invoice date\n" +
             "  RfrdDocAmt   Amount paid, type (CINV/CREN/DUPA/REMI), adjustments\n" +
             "  CdtrRefInf   Creditor's own reference number\n" +
             "  Invcr        Who issued the invoice\n" +
             "  Invcee       Who received the invoice\n" +
             "  TaxRmt       Tax remittance details\n" +
             "  GrnshmtRmt   Garnishment details (payroll scenarios)\n" +
             "  AddtlRmtInf  Up to 3 free-text notes (Max140Text each)\n\n" +
             "Constraint: If Type/Code is CREN, DUPA, or REMI — RmtAmtAndTp must not repeat.\n\n" +
             "Speaker note: The constraint on CREN/DUPA/REMI is enforced by the XSD. Your serializer must know this or schema validation fails."),

            ("Validation Rules",
             "Two layers — both must pass:\n\n" +
             "LAYER 1 — Schema Validation (XSD)\n" +
             "  • Required fields present\n" +
             "  • Types correct (date as YYYY-MM-DD, not 'March 17')\n" +
             "  • Max lengths respected (Max35Text = 35 chars)\n" +
             "  • Enum values valid (CINV, CREN, DUPA, REMI only)\n" +
             "  • Namespace exact match\n\n" +
             "LAYER 2 — Business Rules\n" +
             "  • MsgId unique per sender\n" +
             "  • CREN/DUPA/REMI: RmtAmtAndTp must not repeat\n" +
             "  • AddtlRmtInf: maximum 3 occurrences\n" +
             "  • OriginalPaymentInformation must reference a real prior message\n\n" +
             "Speaker note: Schema failures are caught before processing. Business rule failures may only surface at the receiver's A/R system — often days later."),

            ("C# Implementation",
             "Key points for your implementation:\n\n" +
             "1. Use [XmlRoot] with the exact namespace on Document class\n" +
             "   Namespace = \"urn:iso:std:iso:20022:tech:xsd:remt.001.001.06\"\n\n" +
             "2. List<string> for Unstructured — it's 0..* in the spec\n\n" +
             "3. List<string> for AddtlRmtInf — but enforce max 3 in your builder\n\n" +
             "4. Always serialize then validate against XSD before sending:\n" +
             "   var schemas = new XmlSchemaSet();\n" +
             "   schemas.Add(null, \"remt.001.001.06.xsd\");\n" +
             "   // ValidationEventHandler catches schema errors\n\n" +
             "5. OriginalPaymentInformation is REQUIRED (1..1) — cannot be omitted\n\n" +
             "Speaker note: Step 4 is non-negotiable. Transmitting an invalid message wastes network round-trips and may trigger sanctions from the receiving bank."),

            ("Common Mistakes",
             "Mistake 1: Using Unstructured when Structured is available\n" +
             "  → Your A/R team ends up parsing free text. Defeats the purpose.\n\n" +
             "Mistake 2: Omitting OriginalPaymentInformation\n" +
             "  → Required (1..1). Missing it = schema failure = rejected.\n\n" +
             "Mistake 3: Wrong namespace\n" +
             "  → Using remt.001.001.01 namespace for a v06 message = rejected.\n\n" +
             "Mistake 4: More than 3 AddtlRmtInf elements\n" +
             "  → Schema allows 0..3. A 4th element fails validation silently in some parsers.\n\n" +
             "Mistake 5: Repeating RmtAmtAndTp with CREN/DUPA/REMI type code\n" +
             "  → Explicit spec constraint. XSD will reject it.\n\n" +
             "Speaker note: Print this slide. These are the five bugs that will consume the first two sprints if not addressed up front."),

            ("Next Steps",
             "1. Download the XSD:\n" +
             "   iso20022.org → remt.001.001.06.xsd\n\n" +
             "2. Scaffold the C# data containers\n" +
             "   (available in the Beneficial Strategies ISO 20022 library)\n\n" +
             "3. Build a schema-validating serializer harness\n\n" +
             "4. Write test cases for:\n" +
             "   • Happy path (structured, two invoices)\n" +
             "   • Unstructured only\n" +
             "   • CREN type code (no repeat constraint)\n" +
             "   • Missing OriginalPaymentInformation (expect rejection)\n\n" +
             "5. Ask the AI: 'Generate a full QA test plan for remt.001'\n\n" +
             "Speaker note: Step 5 is not a joke. The MCP server will generate 50+ test cases from the spec automatically.")
        };

        public static void Generate(string outputPath)
        {
            using var presentation = PresentationDocument.Create(
                outputPath, PresentationDocumentType.Presentation);

            var presentationPart = presentation.AddPresentationPart();
            presentationPart.Presentation = new Presentation();

            var slideIdList = new SlideIdList();
            uint slideId = 256;

            foreach (var (title, body) in SlideData)
            {
                var slidePart = presentationPart.AddNewPart<SlidePart>();
                BuildSlide(slidePart, title, body);

                slideIdList.Append(new SlideId
                {
                    Id = slideId++,
                    RelationshipId = presentationPart.GetIdOfPart(slidePart)
                });
            }

            presentationPart.Presentation.Append(slideIdList);
            presentationPart.Presentation.Save();
        }

        private static void BuildSlide(SlidePart slidePart, string title, string body)
        {
            // Parse speaker note out of body (last paragraph starting with "Speaker note:")
            var speakerNote = string.Empty;
            var bodyLines = body.Split('\n').ToList();
            var noteIdx = bodyLines.FindIndex(l => l.StartsWith("Speaker note:"));
            if (noteIdx >= 0)
            {
                speakerNote = bodyLines[noteIdx]["Speaker note:".Length..].Trim();
                bodyLines = bodyLines.Take(noteIdx).ToList();
                body = string.Join('\n', bodyLines).TrimEnd();
            }

            slidePart.Slide = new Slide(
                new CommonSlideData(
                    new ShapeTree(
                        new NonVisualGroupShapeProperties(
                            new NonVisualDrawingProperties { Id = 1, Name = "" },
                            new NonVisualGroupShapeDrawingProperties(),
                            new ApplicationNonVisualDrawingProperties()),
                        new GroupShapeProperties(new A.TransformGroup()),
                        BuildTitleShape(title),
                        BuildBodyShape(body))));

            if (!string.IsNullOrEmpty(speakerNote))
                AddSpeakerNotes(slidePart, speakerNote);

            slidePart.Slide.Save();
        }

        private static Shape BuildTitleShape(string title) => new(
            new NonVisualShapeProperties(
                new NonVisualDrawingProperties { Id = 2, Name = "Title" },
                new NonVisualShapeDrawingProperties(new A.ShapeLocks { NoGrouping = true }),
                new ApplicationNonVisualDrawingProperties(
                    new PlaceholderShape { Type = PlaceholderValues.Title })),
            new ShapeProperties(),
            new TextBody(
                new A.BodyProperties(),
                new A.ListStyle(),
                new A.Paragraph(new A.Run(
                    new A.RunProperties { Language = "en-US", Bold = true },
                    new A.Text(title)))));

        private static Shape BuildBodyShape(string body) => new(
            new NonVisualShapeProperties(
                new NonVisualDrawingProperties { Id = 3, Name = "Body" },
                new NonVisualShapeDrawingProperties(new A.ShapeLocks { NoGrouping = true }),
                new ApplicationNonVisualDrawingProperties(
                    new PlaceholderShape { Index = 1 })),
            new ShapeProperties(),
            new TextBody(
                new A.BodyProperties(),
                new A.ListStyle(),
                body.Split('\n').Select(line =>
                    new A.Paragraph(new A.Run(
                        new A.RunProperties { Language = "en-US", FontSize = 1400 },
                        new A.Text(line))))
                    .ToArray<OpenXmlElement>()));

        private static void AddSpeakerNotes(SlidePart slidePart, string note)
        {
            var notesPart = slidePart.AddNewPart<NotesSlidePart>();
            notesPart.NotesSlide = new NotesSlide(
                new CommonSlideData(
                    new ShapeTree(
                        new NonVisualGroupShapeProperties(
                            new NonVisualDrawingProperties { Id = 1, Name = "" },
                            new NonVisualGroupShapeDrawingProperties(),
                            new ApplicationNonVisualDrawingProperties()),
                        new GroupShapeProperties(new A.TransformGroup()),
                        new Shape(
                            new NonVisualShapeProperties(
                                new NonVisualDrawingProperties { Id = 2, Name = "Notes" },
                                new NonVisualShapeDrawingProperties(),
                                new ApplicationNonVisualDrawingProperties(
                                    new PlaceholderShape { Type = PlaceholderValues.Body })),
                            new ShapeProperties(),
                            new TextBody(
                                new A.BodyProperties(),
                                new A.ListStyle(),
                                new A.Paragraph(new A.Run(new A.Text(note))))))));
            notesPart.NotesSlide.Save();
        }
    }
}

// Generate the deck — no PowerPoint installation required
RemittanceTrainingDeckGenerator.Generate("RemittanceAdvice-Training.pptx");
Console.WriteLine("Deck saved. Open in PowerPoint or Google Slides.");

<PackageReference Include="DocumentFormat.OpenXml" Version="3.1.0" />

from pptx import Presentation
from pptx.util import Inches, Pt
from pptx.dml.color import RGBColor
from pptx.enum.text import PP_ALIGN

SLIDES = [
    (
        "What Is a Remittance?",
        (
            "A remittance is the structured explanation of WHY a payment is being made.\n\n"
            "Without it: payer sends $4,750. Payee has 12 open invoices. Which ones are paid?\n\n"
            "With remt.001: payer says exactly which invoices are covered, the amounts, "
            "and the references — in a machine-readable format both systems can process automatically."
        ),
        "Ask the room: has anyone had to manually match a payment to invoices? "
        "That's the problem this solves."
    ),
    (
        "Where RemittanceAdvice Fits",
        (
            "ISO 20022 Business Area: REMT (Remittance)\n\n"
            "Message ID:  remt.001.001.06\n"
            "Namespace:   urn:iso:std:iso:20022:tech:xsd:remt.001.001.06\n\n"
            "Sent separately from the payment (pain.001) or alongside it.\n\n"
            "The payment moves the money.\n"
            "The remittance advice explains what the money is for."
        ),
        "Show the XSD at iso20022.org — this is the contract both sides implement. "
        "Version 06 is current. Never build against v01."
    ),
    (
        "The Business Case",
        (
            "A/R teams spend hours manually matching payments to invoices.\n\n"
            "remt.001 makes this automatic:\n"
            "  \u2022  Machine-readable invoice references\n"
            "  \u2022  Exact amounts per invoice\n"
            "  \u2022  Tax and adjustment details\n"
            "  \u2022  Creditor reference for cross-system lookup\n\n"
            "ROI: reduces payment-to-close time from days to minutes.\n\n"
            "If your client runs SAP or Oracle Financials, they already expect this format."
        ),
        "Quantify this for the room: how many hours per week does your A/R team spend "
        "on manual payment matching? That's the budget justification."
    ),
    (
        "Message Identity",
        (
            "Full message ID:  remt.001.001.06\n\n"
            "  remt  \u2192  business area (Remittance)\n"
            "  001   \u2192  message functionality\n"
            "  001   \u2192  flavour\n"
            "  06    \u2192  version 6 (current)\n\n"
            "XSD Schema:\n"
            "  iso20022.org \u2192 remt \u2192 schemas \u2192 remt.001.001.06.xsd\n\n"
            "Always validate your output against this schema before transmission.\n"
            "A non-conformant message is silently rejected."
        ),
        "The XSD is the single source of truth. If your message passes XSD validation "
        "and the business rules, it will be accepted."
    ),
    (
        "Message Hierarchy",
        (
            "RemittanceAdviceV06  (remt.001.001.06)\n"
            "\u251c\u2500\u2500 GroupHeader          (1..1)   envelope: sender, receiver, timestamp\n"
            "\u2502     \u251c\u2500\u2500 MessageIdentification   required, unique per sender\n"
            "\u2502     \u251c\u2500\u2500 CreationDateTime        required, ISO datetime\n"
            "\u2502     \u251c\u2500\u2500 InitiatingParty         required, who sent it\n"
            "\u2502     \u2514\u2500\u2500 MessageRecipient        optional, who receives it\n"
            "\u251c\u2500\u2500 RemittanceInformation (1..*) one block per payment explained\n"
            "\u2502     \u251c\u2500\u2500 Unstructured            free text (0..*)\n"
            "\u2502     \u251c\u2500\u2500 Structured              invoice references (0..*)\n"
            "\u2502     \u2514\u2500\u2500 OriginalPaymentInfo     links to pain.001 (required)\n"
            "\u2514\u2500\u2500 SupplementaryData    (0.*) extensibility hook"
        ),
        "The 1..* on RemittanceInformation means one message can explain multiple payments. "
        "The 1..1 on OriginalPaymentInformation means this field is never optional — "
        "missing it causes an immediate schema rejection."
    ),
    (
        "GroupHeader: Required Fields",
        (
            "These fields are REQUIRED (1..1). Missing any one = message rejected.\n\n"
            "  MsgId      Max35Text    Unique reference, assigned by sender\n"
            "  CreDtTm    ISODateTime  Format: 2026-03-17T09:00:00\n"
            "  InitgPty   Party        Sender name + BIC or IBAN\n\n"
            "Optional but important:\n\n"
            "  MsgRcpt    Party        Intended recipient\n"
            "  FwdgAgt    Institution  Intermediary routing agent\n"
            "  CpyInd     Code         Mark copies: CODU / DUPL / COPY\n\n"
            "MsgId must be UNIQUE per sender.\n"
            "Duplicate IDs cause reconciliation failures at the receiver."
        ),
        "MsgId uniqueness is a business rule, not enforced by XSD. "
        "Your implementation must generate a unique ID — timestamp + UUID is the common pattern."
    ),
    (
        "Unstructured Remittance",
        (
            "Use <Ustrd> when:\n"
            "  \u2022  Quick integration — human-readable only\n"
            "  \u2022  Legacy receiver systems that parse free text\n"
            "  \u2022  Adding a note alongside structured data\n\n"
            "Example:\n"
            '  <Ustrd>Payment for INV-2026-042 and INV-2026-043</Ustrd>\n\n'
            "Limitations:\n"
            "  \u2022  Not machine-readable — A/R still matches manually\n"
            "  \u2022  Maximum 140 characters\n"
            "  \u2022  Cannot express amounts, dates, or adjustment reasons"
        ),
        "Think of Unstructured like the memo field on a cheque. "
        "Fine for humans, useless for automation. "
        "Always prefer Structured when the receiver supports it."
    ),
    (
        "Structured Remittance",
        (
            "Use <Strd> for full A/R automation.\n\n"
            "  RfrdDocInf    Invoice number, type code (CINV), invoice date\n"
            "  RfrdDocAmt    Amount paid, type, adjustments and reasons\n"
            "  CdtrRefInf    Creditor's own cross-reference number\n"
            "  Invcr         Who issued the invoice\n"
            "  Invcee        Who received the invoice\n"
            "  TaxRmt        Tax remittance breakdown\n"
            "  GrnshmtRmt    Garnishment details (payroll scenarios)\n"
            "  AddtlRmtInf   Up to 3 free-text notes (140 chars each)\n\n"
            "KEY CONSTRAINT:\n"
            "  If Type/Code = CREN, DUPA, or REMI \u2192\n"
            "  RmtAmtAndTp must NOT repeat. XSD will reject it."
        ),
        "The CREN/DUPA/REMI constraint is the #1 spec gotcha. "
        "Credit notes and duplicates get special treatment. "
        "Make sure your builder enforces this before serialization."
    ),
    (
        "Validation: Two Layers",
        (
            "LAYER 1 \u2014 Schema Validation (XSD)\n"
            "  Catches structural problems before processing:\n"
            "  \u2022  Required fields present\n"
            "  \u2022  Types correct (date as YYYY-MM-DD, not 'March 17')\n"
            "  \u2022  Max lengths respected (Max35Text = 35 chars max)\n"
            "  \u2022  Enum values valid (CINV, CREN, DUPA, REMI only)\n"
            "  \u2022  Namespace exact match to version\n\n"
            "LAYER 2 \u2014 Business Rules\n"
            "  Catches logic problems after parsing:\n"
            "  \u2022  MsgId unique per sender\n"
            "  \u2022  CREN/DUPA/REMI: RmtAmtAndTp must not repeat\n"
            "  \u2022  AddtlRmtInf: maximum 3 occurrences\n"
            "  \u2022  OriginalPaymentInformation must reference real message"
        ),
        "Schema failures are caught immediately. "
        "Business rule failures may surface days later at the receiver's A/R system. "
        "Both layers must pass."
    ),
    (
        "Implementation: Key Rules",
        (
            "1.  Namespace on Document class must be exact:\n"
            "      urn:iso:std:iso:20022:tech:xsd:remt.001.001.06\n\n"
            "2.  Unstructured is a list \u2014 the spec allows 0..*\n\n"
            "3.  AddtlRmtInf is a list \u2014 but enforce max 3 in your builder\n\n"
            "4.  ALWAYS validate before sending:\n"
            "      schemas = XmlSchemaSet()\n"
            "      schemas.Add(None, 'remt.001.001.06.xsd')\n"
            "      # ValidationEventHandler catches schema errors\n\n"
            "5.  OriginalPaymentInformation is REQUIRED (1..1)\n"
            "    It cannot be omitted. Ever."
        ),
        "Rule 4 is non-negotiable. Transmitting an invalid message wastes network "
        "round-trips and may trigger compliance flags at the receiving bank."
    ),
    (
        "Common Mistakes",
        (
            "1.  Using Unstructured when Structured is supported\n"
            "    \u2192 Your A/R team ends up parsing free text manually\n\n"
            "2.  Omitting OriginalPaymentInformation\n"
            "    \u2192 Required (1..1). Missing = schema failure = rejected\n\n"
            "3.  Wrong namespace version\n"
            "    \u2192 Using remt.001.001.01 for a v06 message = rejected\n\n"
            "4.  More than 3 AddtlRmtInf elements\n"
            "    \u2192 Spec allows 0..3. A 4th element fails validation\n\n"
            "5.  Repeating RmtAmtAndTp with CREN / DUPA / REMI type code\n"
            "    \u2192 Explicit spec constraint. XSD will reject it."
        ),
        "Print this slide. These are the five bugs that will consume "
        "the first two sprints if not addressed up front. "
        "All five are directly derived from the ISO spec — not opinions."
    ),
    (
        "Next Steps",
        (
            "1.  Download the XSD\n"
            "      iso20022.org \u2192 remt.001.001.06.xsd\n\n"
            "2.  Scaffold the C# data containers\n"
            "    (available in the Beneficial Strategies ISO 20022 library)\n\n"
            "3.  Build a schema-validating serializer harness\n\n"
            "4.  Write test cases for:\n"
            "      \u2022  Happy path (structured, two invoices)\n"
            "      \u2022  Unstructured only\n"
            "      \u2022  CREN type code (no-repeat constraint)\n"
            "      \u2022  Missing OriginalPaymentInformation (expect rejection)\n\n"
            "5.  Ask the AI: 'Generate a full QA test plan for remt.001'\n"
            "    The MCP server will generate 50+ test cases automatically."
        ),
        "Step 5 is not a joke. Everything in this deck was generated automatically "
        "from the live ISO 20022 specification by the Beneficial Strategies MCP Server. "
        "Your QA plan can be too."
    ),
]

TITLE_COLOR   = RGBColor(0x00, 0x56, 0x4F)   # Beneficial Strategies dark teal
BODY_FONT     = "Calibri"
TITLE_FONT    = "Calibri"
SLIDE_W       = Inches(13.33)
SLIDE_H       = Inches(7.5)

prs = Presentation()
prs.slide_width  = SLIDE_W
prs.slide_height = SLIDE_H

blank_layout = prs.slide_layouts[6]   # fully blank

for title_text, body_text, note_text in SLIDES:
    slide = prs.slides.add_slide(blank_layout)

    # Title box
    txb = slide.shapes.add_textbox(Inches(0.4), Inches(0.25), Inches(12.5), Inches(1.1))
    tf  = txb.text_frame
    tf.word_wrap = True
    p = tf.paragraphs[0]
    p.text = title_text
    p.alignment = PP_ALIGN.LEFT
    run = p.runs[0]
    run.font.name   = TITLE_FONT
    run.font.size   = Pt(32)
    run.font.bold   = True
    run.font.color.rgb = TITLE_COLOR

    # Horizontal rule (thin rectangle)
    rule = slide.shapes.add_shape(
        1,   # MSO_SHAPE_TYPE.RECTANGLE
        Inches(0.4), Inches(1.45), Inches(12.5), Inches(0.04))
    rule.fill.solid()
    rule.fill.fore_color.rgb = TITLE_COLOR
    rule.line.fill.background()

    # Body box
    txb2 = slide.shapes.add_textbox(Inches(0.4), Inches(1.6), Inches(12.5), Inches(5.4))
    tf2  = txb2.text_frame
    tf2.word_wrap = True
    tf2.auto_size = None

    first = True
    for line in body_text.split("\n"):
        p2 = tf2.paragraphs[0] if first else tf2.add_paragraph()
        first = False
        p2.text = line
        if p2.runs:
            r = p2.runs[0]
            r.font.name = BODY_FONT
            r.font.size = Pt(16)
            r.font.color.rgb = RGBColor(0x22, 0x22, 0x22)

    # Speaker notes
    notes_slide = slide.notes_slide
    notes_tf    = notes_slide.notes_text_frame
    notes_tf.text = note_text

prs.save("RemittanceAdvice-Training.pptx")
print("Done — RemittanceAdvice-Training.pptx is ready.")