How To Fix /SAPAPO/TSW_MDC021 - Route &1 is already assigned to the partner.

/SAPAPO/TSW_MDC021 - Overview

• Message type: E = Error

• Message class: /SAPAPO/TSW_MDC -

• Message number: 021

• Message text: Route &1 is already assigned to the partner.

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/TSW_MDC021 - Route &1 is already assigned to the partner. ?

  The SAP error message /SAPAPO/TSW_MDC021 indicates that a route is already assigned to a partner in the system. This typically occurs in the context of Advanced Planning and Optimization (APO) when trying to assign a route to a transportation lane or partner that already has that route assigned.
  
  Cause:
  
  Duplicate Assignment: The route you are trying to assign is already linked to the specified partner or transportation lane.
  Data Integrity Issues: There may be inconsistencies in the master data, leading to unexpected behavior.
  Configuration Errors: Incorrect configuration in the transportation management settings may lead to this error.
  
  
  Solution:
  
  
  Check Existing Assignments:
  
  Navigate to the relevant transaction in SAP (e.g., /SAPAPO/TSW) and check the existing routes assigned to the partner.
  If the route is indeed already assigned, you may need to either remove the existing assignment or choose a different route.
  
  
  
  Remove Duplicate Assignment:
  
  If the route is no longer needed for that partner, you can remove the existing assignment. This