How To Fix CY890 - Operations in fixed time periods cannot be deallocated

SAP Error Message - Details

• Message type: E = Error

• Message class: CY - Capacity Requirements Planning

• Message number: 890

• Message text: Operations in fixed time periods cannot be deallocated

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CY890 - Operations in fixed time periods cannot be deallocated ?

  The SAP error message CY890 ("Operations in fixed time periods cannot be deallocated") typically occurs in the context of production planning and control, particularly when dealing with capacity planning and scheduling in SAP. This error indicates that there are operations scheduled in fixed time periods that cannot be deallocated or rescheduled due to certain constraints.
  Cause:
  
  Fixed Time Periods: The operations are scheduled in fixed time periods, which means they are tied to specific time slots that cannot be changed or removed.
  Dependencies: There may be dependencies or constraints related to the production order, such as linked operations or resource allocations that prevent deallocation.
  Status of the Order: The production order may be in a status that does not allow for changes, such as being released or completed.
  Capacity Planning Settings: The settings in the capacity planning configuration may restrict the deallocation of operations in fixed time periods.
  
  Solution:
  
  Check Order Status: Ensure that the production order is in a status that allows for changes. If it is completed or closed, you may need to reopen it or create a new order.
  Review Scheduling: Look at the scheduling of the operations. If they are indeed in fixed time periods, consider whether you can adjust the scheduling parameters to allow for more flexibility.
  Adjust Dependencies: If there are dependencies preventing deallocation, you may need to adjust or remove those dependencies before attempting to deallocate the operations.
  Capacity Planning Configuration: Review the capacity planning settings in your SAP system. You may need to adjust these settings to allow for the deallocation of operations in fixed time periods.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on handling fixed time period operations and deallocation processes.
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like CO02 (Change Production Order) or CM21 (Capacity Planning) to review and manage production orders and capacity.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  User Roles and Permissions: Ensure that you have the necessary permissions to make changes to production orders and capacity planning settings.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP support team or a functional consultant who specializes in production planning and control.