Challenges/construct-sap-purchase-order-bapi-from-order-data
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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.

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%dw 2.0
output application/json
---
payload
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Edge cases that break
Empty arrays, type coercion, deeply nested transforms, locale-specific dates.
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Real CSV/JSON/XML — null fields, mixed casing, partial records.