How To Fix MODEL040 - Entity '&1' is locked (stack overflow)

MODEL040 - Overview

• Message type: E = Error

• Message class: MODEL - Modeling

• Message number: 040

• Message text: Entity '&1' is locked (stack overflow)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message MODEL040 - Entity '&1' is locked (stack overflow) ?

  The SAP error message MODEL040 indicates that a specific entity (in this case, represented by &1) is locked, which can lead to issues such as a stack overflow. This error typically occurs in the context of SAP Business Planning and Consolidation (BPC) or other SAP applications that involve data modeling and entity management.
  
  Cause:
  
  Entity Locking: The entity is locked due to ongoing processes, such as data entry, data loading, or consolidation activities. This can happen if another user or process is currently working on the same entity.
  Concurrency Issues: Multiple users or processes trying to access or modify the same entity simultaneously can lead to locking issues.
  System Configuration: Incorrect configuration settings in the SAP system can also lead to locking problems.
  Long-running Processes: If a process takes too long to complete, it may hold a lock on the entity longer than expected, causing other operations to fail.
  
  
  Solution:
  
  Check Locks: Use transaction codes like SM12