2025-09-16: IAM Service – validation of predefined group assignments

Overview

The IAM Service was updated with validation for assigning customers to predefined groups. This ensures consistent role management within a company (Legal Entity) and provides clearer error handling for invalid assignments.

New validation rules:

• A customer can only be assigned to one predefined group (for example Admin, Buyer, Requester) within the same Legal Entity.

• Customers may still be assigned to different groups in different companies (Legal Entities).

• The Contact group can always be assigned.

Modified endpoints

Endpoint	Description
Adding a user to a group	Validation added - a customer can only be assigned to one predefined group in one Legal Entity.
Upserting a group assignment	Validation added - a customer can only be assigned to one predefined group in one Legal Entity.

Known problems

There are no known problems.