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© 2026 — Integration TrailsContent — CC BY-NC-SA | Code — MIT LicenseVER:2026-08-11-72a9b56
Challenges/construct-sap-purchase-order-bapi-from-order-data·DataWeave·ADVANCED
DataWeaveADVANCED

Construct SAP Purchase Order BAPI from Order Data

Stratford Manufacturing needs to transform JSON data from a modern REST API into the XML structure required by SAP's BAPI_PO_CREATE1. In this challenge, you will learn to bridge modern APIs with legacy ERPs by mapping a flat JSON array into a multi-table BAPI structure with repeating XML elements. You will also practice handling strict enterprise integration rules, such as coercing and formatting diverse date inputs into SAP's required YYYYMMDD format.

BY @patryk_bandurski
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%dw 2.0
output application/json
---
payload
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The fastest way
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01.
Production payloads
Real CSV/JSON/XML you'll meet on day one — null fields, mixed casing, partial records.
02.
Design problems
What practitioners actually solve — null-safety, idempotency, retries, batch boundaries.
03.
Edge cases that break
Empty arrays, type coercion, deeply nested transforms, locale-specific dates.
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// WHAT YOU'LL BUILDHOW IT WORKS ↓
01.
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02.
Test cases run on real runner
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04.
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05.
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06.
Production-style payloads
Real CSV/JSON/XML — null fields, mixed casing, partial records.