How To Fix W_CB401 - Material Group 4 &1 does not exist

SAP Error Message - Details

• Message type: E = Error

• Message class: W_CB -

• Message number: 401

• Message text: Material Group 4 &1 does not exist

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message W_CB401 - Material Group 4 &1 does not exist ?

  SAP Error Message:
  
  W_CB401 Material Group 4 &1 does not exist
  
  Cause:
  This warning message occurs when the system tries to reference or use a Material Group 4 (a classification field in material master or related master data) that does not exist in the system's configuration or master data tables.
  
  Material Group 4 is typically a classification or grouping field used in certain SAP modules (e.g., MM, SD, or PP) for reporting, pricing, or categorization.
  The system expects a valid entry for Material Group 4 but cannot find the specified value (&1 is a placeholder for the actual group code).
  This can happen during material master creation, data upload, transaction processing, or custom program execution where Material Group 4 is referenced.
  
  
  Where is Material Group 4 maintained?
  Material Group 4 is usually maintained in the Material Master under the Basic Data or Classification views, or in a custom field depending on the SAP implementation.
  
  Possible Reasons:
  
  The Material Group 4 value being used is not defined in the system.
  The value was deleted or never created in the relevant customizing table.
  Data migration or upload errors where invalid Material Group 4 values were entered.
  Custom code or user exits referencing non-existing Material Group 4 values.
  Incorrect configuration or missing master data in the classification system.
  
  
  Solution:
  
  
  Check the Material Group 4 value:
  
  Identify the exact Material Group 4 value causing the error (replace &1 with the actual value).
  
  
  
  Verify existence in SAP:
  
  Use transaction codes like:
  
  MM03 (Display Material Master) to check if the material has the Material Group 4 assigned.
  SPRO ? Logistics - General ? Material Master ? Settings for Key Fields ? Define Material Groups (or similar path depending on your SAP version) to check if the Material Group 4 exists.
  
  
  Alternatively, check the relevant customizing table (e.g., T134 or a custom table) where Material Group 4 values are maintained.
  
  
  
  Create or correct the Material Group 4:
  
  If the Material Group 4 does not exist, create it via customizing or master data maintenance.
  If the value is incorrect in the material master or data upload, correct it.
  
  
  
  Data correction:
  
  For existing materials with invalid Material Group 4, update the material master to assign a valid Material Group 4.
  For data uploads, correct the source data and re-upload.
  
  
  
  Check custom code or user exits:
  
  If the error occurs during custom processing, review the code to ensure it references valid Material Group 4 values.
  
  
  
  
  Related Information:
  
  Material Group fields: SAP allows multiple material group fields (Material Group 1, 2, 3, 4) for detailed classification.
  Tables: Material group data is often stored in tables like T134 (Material Groups) or custom tables.
  Transactions:  
  
  MM01/MM02/MM03 for material master maintenance.  
  SPRO for customizing paths related to material groups.  
  
  
  Notes and Documentation: Check SAP Notes related to material group configuration if the problem persists.
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Error
  Material Group 4 &1 does not exist
  
  
  Cause
  Referenced Material Group 4 value missing or invalid
  
  
  Solution
  Verify and create/correct Material Group 4 in customizing or master data
  
  
  Check
  Material master data, customizing tables, custom code
  
  
  Tools
  MM03, SPRO, SE16/SE16N (table browser)
  
  
  
  
  If you provide the exact Material Group 4 value or the context (transaction, module), I can help with more specific instructions.