3447178 - Custom field not available in Purchase Order API V4

A new custom field has been created for Procurement: Purchasing Document (MM_PURDOC_HEADER) and Procurement: Purchasing Document Item (MM_PURDOC_ITEM).
However, after successfully publishing the custom field, it remains invisible when executing API CE_PURCHASEORDER_0001.

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SAP S/4HANA Cloud

1. Open the Custom Fields app.
2. Navigate to the Custom Fields section and create a new custom field for the Procurement: Purchasing Document (MM_PURDOC_HEADER) or Procurement: Purchasing Document Item (MM_PURDOC_ITEM).
3. Save and publish the newly created custom field.
4. Execute the GET method for API CE_PURCHASEORDER_0001.
5. Inspect the response and observe that the custom field does not appear in the response.

Missing custom field enablement for API.

Enable the custom field for API OData service for PurchaseOrder and PurchaseOrderType :

Purchase Order Create, update, or delete purchase orders using this synchronous service

Purchase Order (OData V4)

Purchase Order API, Custom Field, ODATA, V4 , KBA , MM-PUR-PO , Purchase Orders , How To