How To Fix MD_SUBSTN063 - Exit must be filled if numerator/denominator/percentage/set are filled

SAP Error Message - Details

• Message type: E = Error

• Message class: MD_SUBSTN - Messages for Master Data Substitution

• Message number: 063

• Message text: Exit must be filled if numerator/denominator/percentage/set are filled

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message MD_SUBSTN063 - Exit must be filled if numerator/denominator/percentage/set are filled ?

  The SAP error message MD_SUBSTN063 indicates that there is an issue with the configuration of a substitution in the context of material requirements planning (MRP) or similar processes. Specifically, this error occurs when you have filled in the numerator, denominator, percentage, or set fields in a substitution definition, but you have not provided a corresponding exit (which is a program or function that is called during the substitution process).
  Cause:
  The error is triggered when:
  
  You have defined a substitution rule that includes a numerator, denominator, percentage, or set.
  The exit field, which is supposed to specify the logic or function to be executed during the substitution, is left blank.
  
  Solution:
  To resolve this error, you need to ensure that the exit field is filled in whenever you have defined any of the other fields (numerator, denominator, percentage, or set). Here are the steps to fix the issue:
  
  
  Access the Substitution Definition:
  
  Go to the relevant transaction in SAP where you can manage substitutions (e.g., transaction code OMD1 for defining substitutions).
  
  
  
  Check the Substitution Rule:
  
  Locate the substitution rule that is causing the error.
  Review the fields for numerator, denominator, percentage, and set.
  
  
  
  Fill in the Exit Field:
  
  If you have filled in any of the numerator, denominator, percentage, or set fields, make sure to also fill in the exit field with the appropriate function module or program that should be executed.
  
  
  
  Save Changes:
  
  After making the necessary changes, save the substitution definition.
  
  
  
  Test the Configuration:
  
  Run the process that triggered the error again to ensure that the issue has been resolved.
  
  
  
  Related Information:
  
  Substitution Logic: Substitutions in SAP are often used to modify or enhance the standard behavior of the system based on specific conditions. Understanding how to define and implement these substitutions is crucial for effective configuration.
  Function Modules: The exit field typically requires a function module that contains the logic for the substitution. You may need to create a custom function module if the standard ones do not meet your requirements.
  Documentation: Refer to SAP documentation or help resources for detailed information on how to create and manage substitutions, including examples and best practices.
  
  If you continue to experience issues after following these steps, consider consulting with your SAP support team or a functional consultant who specializes in MRP or the specific module you are working with.