How To Fix CMS_OMS_BP_LNK006 - Business partner ID &1 is already assigned in partner function &2

CMS_OMS_BP_LNK006 - Overview

• Message type: E = Error

• Message class: CMS_OMS_BP_LNK - Business Partner Service Link

• Message number: 006

• Message text: Business partner ID &1 is already assigned in partner function &2

Self-Explanatory Message

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CMS_OMS_BP_LNK006 - Details

• The SAP error message CMS_OMS_BP_LNK006 indicates that a business partner (BP) ID is already assigned to a specific partner function in the system. This typically occurs when you are trying to assign a business partner to a partner function that already has another business partner linked to it.
  
  Cause:
  
  Duplicate Assignment: The business partner ID you are trying to assign is already linked to the specified partner function.
  Incorrect Configuration: There may be a configuration issue where the same business partner is being assigned to multiple partner functions incorrectly.
  Data Entry Error: The user may have mistakenly attempted to assign the same business partner to the same partner function multiple times.
  
  
  Solution:
  
  
  Check Existing Assignments: 
  
  Navigate to the relevant transaction in SAP (e.g., BP transaction) and check the existing assignments for the business partner ID in question.
  Verify which business partner is currently assigned to the partner function you are trying to use.
  
  
  
  Remove or Change Assignment:
  
  If the