SAP Knowledge Base Article - Public

3638370 - API response code of 400 when updating Business Partner Relationship

Symptom

When a user is calling the iFlow Replicate Business Partner Relationships from SAP Master Data Integration to update Business Partner Relationship, POST returns a 400 error. 

Environment

SAP CPQ

Reproducing the Issue

Replicate Business Partner Relationships from SAP Master Data Integration

Cause

Expected Behavior

Resolution

This is expected behavior of CPQ system.

There is no possibility that a relationship can be updated.

If the relationship already exists, you will get a 400 Bad Request API response with an appropriate message that business partner relationship for the provided business partners already exists for the selected relationship category.

Keywords

iFlow, 400, Error, Business Partner, Relationship, API, POST, Request , KBA , CEC-SAL-CPQ , Sales Cloud CPQ , Bug Filed

Product

SAP CPQ 2025