How To Fix VMP_MSG335 - Cannot assign manufacturing substitute

SAP Error Message - Details

• Message type: E = Error

• Message class: VMP_MSG - VMP Message Manager

• Message number: 335

• Message text: Cannot assign manufacturing substitute

What causes this issue?

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

System Response

The system cannot assign manufacturing substitute for the following
reasons:
If the selected BOM item is not created from source BOM.
If the selected BOM item is an assembly.

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 VMP_MSG335 - Cannot assign manufacturing substitute ?

  SAP Error Message:
  
  VMP_MSG335 Cannot assign manufacturing substitute
  
  Cause:
  This error occurs when the system is unable to assign a manufacturing substitute for a component in a production order or process order. Manufacturing substitutes are alternative components that can be used in place of the original component during production.
  Common causes include:
  
  The substitute material is not maintained or defined correctly in the system.
  The substitute is not valid for the specific plant or production version.
  The substitute is not active or has been flagged as deleted.
  The substitute does not meet the requirements for the production order (e.g., wrong material type, status, or availability).
  Missing or incorrect configuration in the manufacturing substitute setup (e.g., in the BOM or production version).
  
  
  Solution:
  To resolve the error, perform the following checks and actions:
  
  
  Check Manufacturing Substitute Setup:
  
  Verify that the manufacturing substitute is correctly maintained in the BOM or production version.
  Use transaction CS03 (Display BOM) or C223 (Maintain Production Version) to check if the substitute is assigned properly.
  
  
  
  Validate Material Master Data:
  
  Ensure the substitute material is active and valid for the plant.
  Check material status and availability using MM03.
  
  
  
  Check Configuration:
  
  Confirm that the substitute is allowed for the specific production process.
  Review settings in the substitution control (e.g., in the BOM or production version).
  
  
  
  Check Production Order Data:
  
  Verify that the production order references the correct BOM and production version where the substitute is defined.
  If necessary, update the production order or recreate it after correcting the substitute assignment.
  
  
  
  Authorization and User Exits:
  
  Ensure no custom user exits or BAdIs are preventing the assignment.
  Check for any custom logic that might block substitute assignment.
  
  
  
  Recreate or Adjust Substitute:
  
  If the substitute is missing or incorrect, maintain or correct it in the BOM or production version.
  
  
  
  
  Related Information:
  
  
  Transactions:
  
  CS03 – Display BOM
  CS02 – Change BOM
  C223 – Maintain Production Version
  CO02 – Change Production Order
  MM03 – Display Material Master
  
  
  
  SAP Notes:
  
  Check SAP Notes related to manufacturing substitutes and BOM management for any known issues or patches.
  
  
  
  Documentation:
  
  SAP Help Portal on BOM and production version management.
  SAP PP (Production Planning) module documentation on manufacturing substitutes.
  
  
  
  
  Summary:
  
  The error VMP_MSG335 Cannot assign manufacturing substitute indicates a problem with the assignment or validity of a manufacturing substitute component in production. The solution involves verifying and correcting the substitute setup in BOMs, production versions, and material master data to ensure the substitute is valid and properly maintained.