How To Fix MD_SUBSTN007 - Conversions are not allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: MD_SUBSTN - Messages for Master Data Substitution

• Message number: 007

• Message text: Conversions are not allowed

What causes this issue?

Application area does not support conversions. For more information,
refer to Product Assistance for Product Substitution.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MD_SUBSTN007 - Conversions are not allowed ?

  The SAP error message MD_SUBSTN007: Conversions are not allowed typically occurs in the context of Material Requirements Planning (MRP) or when dealing with the substitution of materials in SAP. This error indicates that there is an issue with the conversion of materials, which is not permitted in the current context.
  Causes:
  
  Material Type Restrictions: The material you are trying to substitute may not be allowed for conversion due to its material type or status.
  Configuration Settings: The system configuration may not allow for certain types of conversions or substitutions based on business rules or settings in the material master.
  Missing Master Data: The necessary master data for the materials involved in the substitution may be incomplete or incorrectly configured.
  MRP Settings: The settings in the MRP area or planning parameters may not support the conversion of materials.
  Document Type Restrictions: Certain document types may have restrictions on material conversions.
  
  Solutions:
  
  Check Material Master Data: Ensure that the material master data for both the original and substitute materials is complete and correctly configured. Pay attention to the material type and status.
  Review Configuration Settings: Consult with your SAP configuration team to review the settings related to material conversions and substitutions. Ensure that the necessary configurations are in place to allow for conversions.
  MRP Settings: Verify the MRP settings for the materials involved. Ensure that the planning parameters allow for the desired conversions.
  Consult Documentation: Review SAP documentation or notes related to the specific error message for any additional insights or updates that may apply to your version of SAP.
  Error Logs: Check the system logs for any additional error messages or warnings that may provide more context about the issue.
  Testing: If possible, conduct tests in a development or quality environment to replicate the issue and identify the specific conditions that lead to the error.
  
  Related Information:
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error message or provide patches and updates.
  Transaction Codes: Familiarize yourself with transaction codes related to material management, such as MM01 (Create Material), MM02 (Change Material), and MD04 (Stock/Requirements List), to help diagnose the issue.
  User Roles and Authorizations: Ensure that the user attempting the conversion has the necessary authorizations to perform the action.
  
  If the issue persists after checking these areas, it may be beneficial to engage with SAP support or your internal SAP team for further assistance.