How To Fix CR121 - Available capacity is referenced and cannot be changed

SAP Error Message - Details

• Message type: E = Error

• Message class: CR - (1,099) Work Center; (100,200) Capacity

• Message number: 121

• Message text: Available capacity is referenced and cannot be changed

Self-Explanatory Message

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• What is the cause and solution for SAP error message CR121 - Available capacity is referenced and cannot be changed ?

  The SAP error message CR121, which states "Available capacity is referenced and cannot be changed," typically occurs in the context of capacity planning and production planning within SAP. This error indicates that there is an attempt to change the available capacity of a resource (like a work center) that is currently being referenced in a production order, planning scenario, or other related processes.
  Cause:
  
  Referenced Capacity: The available capacity of a work center is being referenced in a production order or planning scenario, which means it is locked for changes to maintain data integrity.
  Active Orders: There may be active production orders or planned orders that are utilizing the capacity of the work center.
  Capacity Planning: The system may be configured to prevent changes to capacity when it is actively being used in planning or scheduling.
  
  Solution:
  
  Check Active Orders: Review any active production or planned orders that are using the work center. If there are active orders, you may need to complete or delete them before making changes to the capacity.
  Change Capacity in Non-Referenced State: If you need to change the available capacity, ensure that no orders are referencing it. You may need to wait until the orders are completed or released.
  Use Transaction Codes: Use transaction codes like CM01 (Capacity Planning) or CR02 (Change Work Center) to check the status of the work center and its capacity.
  Consult with Planning Team: If you are unsure about the implications of changing capacity, consult with your production planning or capacity planning team to understand the impact of such changes.
  System Configuration: In some cases, the system configuration may need to be reviewed to ensure that it allows for the necessary changes without causing conflicts.
  
  Related Information:
  
  Work Center Configuration: Review the configuration of the work center in transaction CR01 (Create Work Center) or CR02 (Change Work Center) to understand its settings and how they relate to capacity.
  Capacity Evaluation: Use transaction CM21 (Capacity Evaluation) to analyze the capacity situation and see if there are any bottlenecks or issues that need to be addressed.
  Documentation: Refer to SAP documentation or help files for more detailed information on capacity planning and management.
  
  By following these steps, you should be able to resolve the CR121 error and make the necessary changes to the available capacity in SAP.