3285430 - error code: 20006, message: The user exists in multiple origins.

You have applied Establish Trust and Federation of Custom Identity Providers for Platform Users [Feature Set B]. After that, when trying to add Organization Members and add Space Members using the Cloud Foundry Command Line Interface, "The user exists in multiple origins" error occurred.

For example:
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C:\Users\ <user A> >cf set-org-role <USERNAME> <ORG> OrgManager
Assigning role OrgManager to user <USERNAME> in org <ORG> as <USERNAME>...
FAILED
Server error, status code: 400, error code: 20006, message: The user exists in multiple origins. Specify an origin for the requested user from: '<sap.ids>', '<your IAS tenant ID>-platform'

C:\Users\ <user A> >cf set-space-role <USERNAME> <ORG> SpaceManager
Assigning role RoleSpaceManager to user <USERNAME> in org <ORG> as <USERNAME>...
FAILED
Server error, status code: 400, error code: 20006, message: The user exists in multiple origins. Specify an origin for the requested user from: '<sap.ids>', '<you IAS tenant ID>-platform'
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• SAP Business Technology Platform Cloud Foundry - BTP CF
• Feature Set B

add Organization Members, add Space Members, using the Cloud Foundry Command Line Interface, Establish Trust and Federation of Custom Identity Providers for Platform Users [Feature Set B], Server error, status code: 400, error code: 20006, message: The user exists in multiple origins. Specify an origin for the requested user from, '-platform' , KBA , BC-CP-CF-SEC-IAM , UAA, Authentication, Authorization, Trust Mgmnt , Problem