How To Fix /SAPAPO/A1028 - TSP / carrier &1 is still assigned to a transportation lane from &2 to &3

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/A1 -

• Message number: 028

• Message text: TSP / carrier &1 is still assigned to a transportation lane from &2 to &3

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/A1028 - TSP / carrier &1 is still assigned to a transportation lane from &2 to &3 ?

  The SAP error message /SAPAPO/A1028 indicates that a carrier is still assigned to a transportation lane, which is preventing certain operations from being completed. This error typically arises in the context of Advanced Planning and Optimization (APO) within SAP, particularly when dealing with transportation planning.
  Cause:
  The error occurs when you attempt to delete or modify a transportation lane that is still associated with a carrier. The specific message indicates that the carrier (denoted as &1) is still linked to a transportation lane from location &2 to location &3. This linkage must be resolved before you can proceed with the intended operation.
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check Transportation Lane Assignments:
  
  Navigate to the transportation lane configuration in SAP APO.
  Verify the assignments of the carrier to the transportation lane in question.
  
  
  
  Remove Carrier Assignment:
  
  If the carrier is no longer needed for that transportation lane, you can remove the assignment.
  Go to the relevant transaction (e.g., `/SAPAPO/TP) and find the transportation lane.
  Edit the transportation lane and remove the carrier assignment.
  
  
  
  Check for Dependencies:
  
  Ensure that there are no other dependencies or processes that are still using the transportation lane or the carrier.
  If there are active transportation orders or planning runs that reference the lane, you may need to complete or delete those first.
  
  
  
  Reassign or Update:
  
  If you need to keep the transportation lane but change the carrier, you can reassign a different carrier to the lane.
  
  
  
  Consult Documentation:
  
  If you are unsure about the implications of removing a carrier or modifying a transportation lane, consult your organization's documentation or SAP help resources.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as /SAPAPO/TP for transportation lane maintenance.
  SAP Notes: Check for any SAP Notes related to transportation lane management and error handling for additional guidance.
  User Roles: Ensure that you have the necessary authorizations to make changes to transportation lanes and carrier assignments.
  Testing: After making changes, conduct tests to ensure that the transportation planning processes function as expected without the error.
  
  By following these steps, you should be able to resolve the error message /SAPAPO/A1028 and continue with your transportation planning activities in SAP APO.