How To Fix CMS_CAG304 - Business partner ID &1 already exists in parnter function '&2'

CMS_CAG304 - Overview

• Message type: E = Error

• Message class: CMS_CAG - Message Class for Collateral Agreement

• Message number: 304

• Message text: Business partner ID &1 already exists in parnter function '&2'

What causes this issue?

A business partner can assume more than one partner function but not the
same partner function more than once.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CMS_CAG304 - Business partner ID &1 already exists in parnter function '&2' ?

  The SAP error message CMS_CAG304 indicates that there is an attempt to create or modify a business partner (BP) in a way that conflicts with existing data. Specifically, it means that a business partner ID already exists for the specified partner function.
  
  Cause:
  
  Duplicate Business Partner ID: The error occurs when you try to create a new business partner with an ID that already exists in the system for the specified partner function.
  Incorrect Data Entry: There may be a mistake in the data entry, such as entering the wrong business partner ID or partner function.
  Data Migration Issues: If data has been migrated from another system, there may be duplicates that were not properly handled.
  
  Configuration Issues: There may be issues with the configuration of partner functions or business partner roles.
  
  
  Solution:
  
  Check Existing Business Partners: Verify if the business partner ID you are trying to create already exists in the system. You can do this