How To Fix M_004 - Fields filled which are not allowed in material mapping (DI)

SAP Error Message - Details

• Message type: E = Error

• Message class: M_ - Messages for material field length extension mapping

• Message number: 004

• Message text: Fields filled which are not allowed in material mapping (DI)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message M_004 - Fields filled which are not allowed in material mapping (DI) ?

  The SAP error message M_004, which states "Fields filled which are not allowed in material mapping (DI)," typically occurs in the context of data import or data integration processes, particularly when dealing with material master data in SAP. This error indicates that there are fields in the material mapping that have been filled inappropriately or are not allowed according to the system's configuration.
  Cause:
  
  Incorrect Field Mapping: The fields that are being populated in the material mapping do not match the expected fields defined in the system. This could be due to incorrect configuration or misunderstanding of the data structure.
  Mandatory Fields Missing: Sometimes, the error can arise if mandatory fields are not filled, leading the system to reject the mapping.
  Data Format Issues: The data being imported may not conform to the expected format or data type for certain fields.
  Custom Fields: If there are custom fields in the material mapping that are not recognized by the system, this can also trigger the error.
  
  Solution:
  
  Review Field Mapping: Check the mapping configuration to ensure that only the allowed fields are being populated. Remove any fields that are not permitted.
  Check Required Fields: Ensure that all mandatory fields are filled correctly. Refer to the material master data requirements in your SAP configuration.
  Data Validation: Validate the data being imported to ensure it meets the required formats and types for each field.
  Consult Documentation: Refer to SAP documentation or your organization's data integration guidelines to understand which fields are allowed and how they should be populated.
  Testing: If changes are made, conduct tests with a small set of data to ensure that the error does not recur before performing a full data import.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common errors.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MM01 (Create Material), MM02 (Change Material), and MM03 (Display Material) to understand how material data is structured.
  Data Integration Tools: If you are using tools like SAP Data Services or SAP PI/PO for data integration, review the configuration settings in those tools as well.
  User Roles and Authorizations: Ensure that the user performing the mapping has the necessary authorizations to access and modify the material master data.
  
  By following these steps, you should be able to identify the cause of the M_004 error and implement a solution to resolve it.