How To Fix R11661 - BP role &1 w. differentiation type value &3 already exists for partner &2

R11661 - Overview

• Message type: E = Error

• Message class: R11 - Business Partner and BDT

• Message number: 661

• Message text: BP role &1 w. differentiation type value &3 already exists for partner &2

Self-Explanatory Message

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R11661 - Details

• The SAP error message R11661 indicates that there is an attempt to create or modify a Business Partner (BP) role that already exists for a specific partner with a differentiation type. This error typically arises when you are trying to assign a role to a Business Partner that is already assigned with the same role and differentiation type.
  
  Cause:
  
  Duplicate Role Assignment: The primary cause of this error is that the Business Partner already has the specified role with the same differentiation type. In SAP, roles can have different differentiation types, and if you try to assign a role that already exists with the same differentiation type, this error will occur.
  Data Entry Error: There may be a mistake in the data entry where the same role is being assigned again inadvertently.
  System Configuration: There might be a configuration issue in the system that allows for the same role to be assigned multiple times