How To Fix GK156 - &1 &2 was already assigned

SAP Error Message - Details

• Message type: E = Error

• Message class: GK - Messages for SAP Consolidation

• Message number: 156

• Message text: &1 &2 was already assigned

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message GK156 - &1 &2 was already assigned ?

  The SAP error message GK156 indicates that a specific object (like a cost center, internal order, or another master data object) is already assigned to another entity, and therefore cannot be assigned again to the one you are trying to assign it to. This typically occurs in the context of controlling (CO) or financial accounting (FI) modules.
  Cause:
  
  Duplicate Assignment: The object you are trying to assign (e.g., cost center, internal order) is already linked to another entity in the system.
  Configuration Issues: There may be configuration settings that prevent the assignment of the object to multiple entities.
  Data Integrity Constraints: SAP enforces data integrity rules that prevent the same object from being assigned to multiple locations or entities simultaneously.
  
  Solution:
  
  
  Check Existing Assignments: 
  
  Use transaction codes like KS03 (Display Cost Center) or KO03 (Display Internal Order) to check where the object is currently assigned.
  Identify the existing assignment and determine if it can be modified or if the object can be released from its current assignment.
  
  
  
  Modify or Release Assignment:
  
  If the object is no longer needed in its current assignment, you can release it using the appropriate transaction (e.g., KS02 for cost centers).
  If the object needs to be assigned to a new entity, ensure that it is unassigned from the old entity first.
  
  
  
  Consult Configuration:
  
  Review the configuration settings in the controlling module to ensure that the assignment rules are set up correctly.
  If necessary, consult with your SAP Basis or configuration team to adjust settings that may be causing the issue.
  
  
  
  Check for Custom Logic:
  
  If there are any custom developments or enhancements in your SAP system, check if they are affecting the assignment logic.
  
  
  
  Documentation and Support:
  
  Refer to SAP documentation or help files for more detailed information on the specific object you are working with.
  If the issue persists, consider reaching out to SAP support or your internal SAP support team for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes for managing cost centers, internal orders, or other objects in the CO module.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  User Authorization: Ensure that you have the necessary authorizations to make changes to the assignments in the system.
  
  By following these steps, you should be able to identify the cause of the GK156 error and take appropriate action to resolve it.