How To Fix /SAPAPO/OM_ERROR021 - Only use constants from /sapapo/constants ("Activity status")

/SAPAPO/OM_ERROR021 - Overview

• Message type: E = Error

• Message class: /SAPAPO/OM_ERROR -

• Message number: 021

• Message text: Only use constants from /sapapo/constants ("Activity status")

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/OM_ERROR021 - Only use constants from /sapapo/constants ("Activity status") ?

  The SAP error message /SAPAPO/OM_ERROR021 indicates that there is an issue with the use of constants in the context of activity status within the SAP Advanced Planning and Optimization (APO) module. This error typically arises when a non-constant value is used where a predefined constant is expected.
  
  Cause:
  The error is triggered when:
  
  A user attempts to use a variable or a non-constant value in a field that requires a constant from the /SAPAPO/Constants table, specifically related to activity status.
  The system expects a specific set of predefined constants for activity statuses, and any deviation from these constants will result in this error.
  
  
  Solution:
  To resolve this error, follow these steps:
  
  
  Check the Input Values: Review the values being passed to the function or transaction that triggered the error. Ensure that only constants defined in the /SAPAPO/Constants table for activity status are being used.
  
  
  Use the Correct Constants: 
  
  Navigate to the /SAPAPO/Constants table in your SAP system.
  Identify the