How To Fix AJ164 - Operation mode &1 is already allocated (entry no. &2)

SAP Error Message - Details

• Message type: E = Error

• Message class: AJ - Billing program

• Message number: 164

• Message text: Operation mode &1 is already allocated (entry no. &2)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message AJ164 - Operation mode &1 is already allocated (entry no. &2) ?

  The SAP error message AJ164 indicates that an operation mode is already allocated to a particular entry, which prevents the system from allocating it again. This error typically occurs in the context of SAP's production planning or process management modules, where operation modes are used to define how resources (like machines or work centers) are utilized.
  Cause:
  
  Duplicate Allocation: The operation mode you are trying to allocate is already assigned to another process or entry.
  Configuration Issues: There may be a misconfiguration in the operation mode settings or in the resource allocation settings.
  Concurrency: Multiple users or processes may be trying to allocate the same operation mode simultaneously.
  Data Integrity Issues: There could be inconsistencies in the database or master data that lead to this error.
  
  Solution:
  
  Check Existing Allocations: Review the current allocations of the operation mode in question. You can do this by navigating to the relevant transaction (e.g., CO01 for production orders) and checking the operation mode assignments.
  Release or Change Allocation: If the operation mode is indeed allocated to another entry, you may need to release it or change the allocation to a different operation mode.
  Review Configuration: Ensure that the configuration for operation modes is set up correctly in the system. This includes checking the settings in the relevant customizing transactions (e.g., OPL8 for operation modes).
  Database Consistency Check: Run consistency checks on the database to ensure there are no integrity issues. This may involve using transaction codes like SE11 or SE14 to check the database tables.
  User Coordination: If multiple users are involved, ensure that there is proper coordination to avoid simultaneous allocations of the same operation mode.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CO01 (Create Production Order), CO02 (Change Production Order), and OPL8 (Operation Modes).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. You can search for the error message number AJ164 in the SAP Support Portal.
  Documentation: Review SAP documentation related to operation modes and resource allocation for best practices and guidelines.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP Basis or technical team for further investigation, as they may have access to logs and deeper system insights.