How To Fix /SAPAPO/OM_PVC_BASE021 - Invalid repetition of a call

/SAPAPO/OM_PVC_BASE021 - Overview

• Message type: E = Error

• Message class: /SAPAPO/OM_PVC_BASE -

• Message number: 021

• Message text: Invalid repetition of a call

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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/SAPAPO/OM_PVC_BASE021 - Details

• The SAP error message /SAPAPO/OM_PVC_BASE021 Invalid repetition of a call typically occurs in the context of SAP Advanced Planning and Optimization (APO), particularly when dealing with the Production Planning and Detailed Scheduling (PP/DS) module. This error indicates that there is an issue with the way a function or method is being called, often related to the planning process or the execution of a specific operation.
  Causes:
  
  Duplicate Calls: The error may arise if a function is being called multiple times in a way that is not allowed. This could happen due to incorrect logic in the code or configuration.
  Concurrency Issues: If multiple processes are trying to access or modify the same data simultaneously, it can lead to this error.
  Incorrect Configuration: Misconfiguration in the planning setup or master data can lead to invalid calls being made during the planning run.
  Data Integrity Issues: If there are inconsistencies or corruption in the master data or