3730332 - Custom fields in customer core view not returned by business partner api.

• Custom fields are created in the Customer Core View business context and enabled/published for the A_Customer and I_Customer views.
• When running the Business Partner OData API (entity A_Customer), the custom fields are not included in the response, and their values cannot be read.
• In the View Browser app, the custom fields appear in the A_Customer and I_Customer views.

SAP S/4HANA Cloud Public Edition

1. Run the Business Partner OData API for entity A_Customer (refer to: API_BUSINESS_PARTNER - A_Customer).
2. Observe that the custom fields from the Customer Core View are not present in the API response.

The "Odata extension model for Business Partner API" was not enabled, so the custom fields were not exposed by the API.

1. Enable the service "Odata extension model for Business Partner API".
2. Run the API for entity A_Customer again and confirm that the custom fields are returned in the response.

• refer to: Business Partner API (A_Customer)
• refer to: SAP Help Portal - Custom Fields (Key User)
• refer to: Community QA: Add custom fields to OData API entities

custom fields, customer core view, api_business_partner, a_customer, i_customer, odata extension model, fields not returned, business partner api, key user extensibility, s/4hana cloud, odata exposure, view browser, enable usage, api response, extensibility model , KBA , LO-MD-BP-ODT , OData Service for Business Partner , Problem