How To Fix HPC034 - Generation of hierarchy type &2 failed; class &1 locked

SAP Error Message - Details

• Message type: E = Error

• Message class: HPC - Classification-Based Product Hierarchy

• Message number: 034

• Message text: Generation of hierarchy type &2 failed; class &1 locked

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 HPC034 - Generation of hierarchy type &2 failed; class &1 locked ?

  The SAP error message HPC034 indicates that there was a failure in generating a hierarchy due to the specified class being locked. This typically occurs in the context of SAP's Hierarchy Management, where certain classes or objects are locked to prevent concurrent modifications that could lead to data inconsistencies.
  
  Cause:
  
  Class Locking: The class specified in the error message is currently locked by another user or process. This can happen if someone is editing the class or if a background job is running that is using the class.
  Transaction Lock: The transaction that is trying to generate the hierarchy is unable to proceed because it cannot obtain the necessary locks on the class.
  System Configuration: There may be configuration settings that are causing the class to be locked during certain operations.
  
  
  Solution:
  
  Check Locks: Use transaction code SM12 to check for any existing locks on the class. If you find that a lock exists, you can