How To Fix GHO_BO040 - Entry not possible; medium '&1' is already assigned to production network

SAP Error Message - Details

• Message type: E = Error

• Message class: GHO_BO -

• Message number: 040

• Message text: Entry not possible; medium '&1' is already assigned to production network

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 GHO_BO040 - Entry not possible; medium '&1' is already assigned to production network ?

  The SAP error message GHO_BO040 indicates that a specific medium (like a material, resource, or equipment) is already assigned to a production network, and therefore, it cannot be assigned again to another production network or operation. This is a common issue in production planning and execution within SAP systems, particularly in the context of production orders and networks.
  Cause:
  
  Duplicate Assignment: The medium you are trying to assign is already linked to another production network or operation.
  Configuration Issues: There may be configuration settings in the system that prevent the reassignment of mediums.
  Data Integrity: The system is designed to maintain data integrity, ensuring that resources are not over-allocated or mismanaged.
  
  Solution:
  
  
  Check Current Assignments: 
  
  Use transaction codes like CNO1 (for network overview) or CNO2 (for network change) to check where the medium is currently assigned.
  Identify the production network that is currently using the medium.
  
  
  
  Reassign or Release the Medium:
  
  If the medium is no longer needed in the current production network, you can release it from that network.
  If you need to use the medium in a different network, ensure that it is not actively being used in another operation.
  
  
  
  Adjust Production Network:
  
  If the medium must be used in multiple networks, consider adjusting the production network design or the scheduling to accommodate the use of the medium in different contexts.
  
  
  
  Consult Documentation: 
  
  Review SAP documentation or help files related to production networks and resource assignments for specific guidelines on managing resources.
  
  
  
  Contact SAP Support: 
  
  If the issue persists and you cannot find a resolution, consider reaching out to SAP support for assistance, especially if this is affecting production processes.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CNO1, CNO2, CO02 (for production order), and CO03 (for display production order).
  SAP Notes: Check for any SAP Notes related to this error message for potential patches or updates that may address the issue.
  User Roles and Permissions: Ensure that you have the necessary permissions to make changes to production networks and resource assignments.
  
  By following these steps, you should be able to resolve the GHO_BO040 error and manage your production resources effectively.