How To Fix MD_SUBSTN002 - Reason & does not exist

SAP Error Message - Details

• Message type: E = Error

• Message class: MD_SUBSTN - Messages for Master Data Substitution

• Message number: 002

• Message text: Reason & does not exist

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message MD_SUBSTN002 - Reason & does not exist ?

  The SAP error message MD_SUBSTN002 typically indicates that a substitution (or alternative) for a material does not exist in the system. This error often arises in the context of Material Requirements Planning (MRP) or when trying to create or process a production order, purchase requisition, or similar transactions where material substitution is relevant.
  Cause:
  
  
  Missing Substitution Data: The primary cause of this error is that the system cannot find a defined substitution for the specified material. This could be due to:
  
  The substitution has not been set up in the system.
  The substitution is inactive or not valid for the current context (e.g., date range, plant).
  The material number or the alternative material number is incorrect.
  
  
  
  Configuration Issues: There may be issues with the configuration settings related to material substitution in the system.
  
  
  Solution:
  
  
  Check Substitution Settings:
  
  Go to the transaction code OVZB (or navigate through the menu) to check the substitution settings for the material in question.
  Ensure that the substitution is defined correctly and is active.
  
  
  
  Define Substitution:
  
  If no substitution exists, you may need to create one. This can be done in the same transaction (OVZB) or through the relevant material master data.
  Ensure that the alternative material is valid and available in the system.
  
  
  
  Validate Material Master:
  
  Check the material master data for both the original and alternative materials to ensure they are set up correctly and are active.
  
  
  
  Check Validity Period:
  
  Ensure that the substitution is valid for the date range you are working with. Sometimes substitutions are only valid for specific periods.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or help files related to material substitution for additional guidance on setup and troubleshooting.
  
  
  
  Contact Support:
  
  If the issue persists after checking the above points, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as:
  
  MM02: Change Material Master
  MM03: Display Material Master
  MD01: MRP Run
  OVZB: Maintain Substitution
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  User Roles: Ensure that you have the necessary authorizations to view and modify substitution settings.
  
  By following these steps, you should be able to identify the cause of the MD_SUBSTN002 error and implement a solution.