How To Fix /SCMB/VMI_APO021 - Error in function module /SAPAPO/VMI_PROACT

/SCMB/VMI_APO021 - Overview

• Message type: E = Error

• Message class: /SCMB/VMI_APO -

• Message number: 021

• Message text: Error in function module /SAPAPO/VMI_PROACT

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.

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/SCMB/VMI_APO021 - Details

• The SAP error message /SCMB/VMI_APO021 typically indicates an issue within the function module /SAPAPO/VMI_PROACT, which is related to the Vendor Managed Inventory (VMI) process in SAP Advanced Planning and Optimization (APO). This error can arise due to various reasons, including data inconsistencies, configuration issues, or problems with the integration between different SAP modules.
  Possible Causes:
  
  Data Inconsistencies: There may be missing or incorrect data in the master data (e.g., material master, vendor master) or transactional data (e.g., stock levels, sales orders).
  
  Configuration Issues: The VMI configuration settings may not be correctly set up in the system, leading to errors during the execution of the function module.
  Authorization Issues: The user executing the function may not have the necessary authorizations to access certain data or perform specific actions.
  Integration Problems: Issues with the integration between SAP APO and other modules (like SAP ECC) can lead to errors in data retrieval or processing.
  Technical Errors: There may be