How To Fix WGDS_ENH129 - Material category can be changed only after saving the converted variants

SAP Error Message - Details

• Message type: E = Error

• Message class: WGDS_ENH -

• Message number: 129

• Message text: Material category can be changed only after saving the converted variants

Self-Explanatory Message

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• What is the cause and solution for SAP error message WGDS_ENH129 - Material category can be changed only after saving the converted variants ?

  Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  WGDS_ENH129: Material category can be changed only after saving the converted variants
  
  Cause:
  This error occurs in the Variant Configuration process, specifically when working with configurable materials in SAP. The message indicates that you are trying to change the Material Category of a configurable material before saving the converted characteristic variants.
  
  In SAP Variant Configuration, when you convert characteristics or variants, the system requires that these converted variants be saved first.
  The material category (e.g., configurable material category like KMAT) is linked to the variant characteristics.
  Changing the material category before saving the converted variants can lead to inconsistencies or data loss, so SAP prevents this action.
  
  
  When does it typically occur?
  
  During the creation or modification of configurable materials (material category KMAT).
  When you convert characteristics or variants in the material master or classification.
  When you try to change the material category before completing the variant conversion process.
  
  
  Solution:
  
  
  Save the Converted Variants First:
  
  Before attempting to change the material category, ensure that all converted variants or characteristics are saved properly.  
  
  Complete the variant conversion process.
  Save all changes related to the variants.
  
  
  
  Check Variant Configuration Steps:
  
  Follow the correct sequence in variant configuration:
  
  Convert characteristics/variants.
  Save the converted variants.
  Then change the material category if needed.
  
  
  
  Use Correct Transaction and Process Flow:  
  
  Use transaction codes like MM01 or MM02 for material master changes.
  Use variant configuration transactions properly (CU41, CU42, CU50, etc.) to handle characteristics and variants.
  
  
  
  If the error persists:  
  
  Check if there are any unsaved changes in the variant configuration.
  Verify if the system has any locks or incomplete processes.
  Consult with your SAP Variant Configuration consultant or Basis team if necessary.
  
  
  
  
  Related Information:
  
  
  Material Category KMAT: Used for configurable materials that have variant characteristics.
  
  
  Variant Configuration: Allows you to create materials with multiple variants based on characteristics.
  
  
  Characteristic Variants: These are the specific values or options assigned to characteristics for a configurable material.
  
  
  Transactions:  
  
  MM01 - Create Material  
  MM02 - Change Material  
  CU41 - Create Characteristic  
  CU42 - Change Characteristic  
  CU50 - Create Class  
  CU51 - Change Class
  
  
  
  SAP Notes: Sometimes SAP releases notes or patches related to variant configuration errors. Check SAP Support Portal for any relevant notes.
  
  
  
  Summary:
  
  Error: You cannot change the material category before saving converted variants.
  Fix: Save all converted variants first, then change the material category.
  Context: Happens in variant configuration for configurable materials (KMAT).
  
  
  If you need further assistance, please provide the exact transaction and steps you are performing, and I can help troubleshoot more specifically.