How To Fix UPO_UDM_MSG031 - Selected WC Volume cannot be Created, as allocation results exist

SAP Error Message - Details

• Message type: E = Error

• Message class: UPO_UDM_MSG - UDM Messages

• Message number: 031

• Message text: Selected WC Volume cannot be Created, as allocation results exist

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message UPO_UDM_MSG031 - Selected WC Volume cannot be Created, as allocation results exist ?

  The SAP error message UPO_UDM_MSG031 indicates that a selected Work Center (WC) volume cannot be created because allocation results already exist. This typically occurs in the context of production planning and capacity management within SAP, particularly when dealing with the allocation of resources or capacities to production orders.
  Cause:
  The error is generally caused by one of the following reasons:
  
  
  Existing Allocations: There are already existing allocations for the work center that prevent the creation of a new volume. This could be due to previous planning activities or allocations that have not been cleared or completed.
  
  
  Inconsistent Data: There may be inconsistencies in the data related to the work center, such as incorrect settings or configurations that prevent new allocations from being created.
  
  
  Locked Resources: The work center or its resources may be locked due to ongoing processes or transactions, which can prevent new allocations from being made.
  
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Check Existing Allocations: Review the existing allocations for the work center. You can do this by navigating to the relevant transaction codes (like CM21 for capacity planning) to see if there are any active allocations that need to be addressed.
  
  
  Clear or Adjust Allocations: If there are allocations that are no longer needed, consider clearing or adjusting them. This may involve deleting or modifying existing production orders or capacity plans.
  
  
  Review Work Center Settings: Ensure that the work center settings are correctly configured. Check for any inconsistencies in the master data that might be causing the issue.
  
  
  Unlock Resources: If the work center or its resources are locked, you may need to unlock them. This can involve checking for any ongoing processes that might be holding locks and resolving them.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance related to your version of SAP and the context in which the error occurs.
  
  
  Contact Support: If the issue persists after trying the above steps, consider reaching out to your SAP support team or consulting with SAP experts for further assistance.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CM21 (Capacity Planning), COHV (Mass Processing of Production Orders), and others that may help in managing work center allocations.
  SAP Notes: Check for any SAP Notes related to this error message, as they may provide specific patches or updates that address known issues.
  User Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.