How To Fix WRF_MATERIAL004 - Choose either internal or external number assignment

SAP Error Message - Details

• Message type: E = Error

• Message class: WRF_MATERIAL - Additional Messages for Material Master (Retail)

• Message number: 004

• Message text: Choose either internal or external number assignment

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WRF_MATERIAL004 - Choose either internal or external number assignment ?

  The SAP error message WRF_MATERIAL004 typically occurs when you are trying to create or change a material master record, and the system requires you to choose between internal or external number assignment for the material number. This error is related to the configuration settings in the material master data.
  Cause:
  The error arises when the system is unable to determine whether to use internal or external number assignment for the material number. This can happen due to:
  
  Configuration Settings: The settings in the material type configuration may not be properly defined. Specifically, the number assignment type for the material type may not be set correctly.
  User Input: The user may not have specified the number assignment type when creating a new material.
  Authorization Issues: Sometimes, the user may not have the necessary authorizations to create materials with a specific number assignment type.
  
  Solution:
  To resolve the WRF_MATERIAL004 error, you can follow these steps:
  
  
  Check Material Type Configuration:
  
  Go to the SPRO transaction (Customizing).
  Navigate to Logistics - General > Material Master > Basic Settings > Material Types.
  Select the relevant material type and check the settings for Number Assignment. Ensure that it is set to either "Internal" or "External" as per your requirements.
  
  
  
  Choose Number Assignment:
  
  When creating a new material, ensure that you explicitly choose either internal or external number assignment in the relevant field.
  If you are using a transaction that allows for both types, make sure to select the appropriate option.
  
  
  
  User Authorizations:
  
  Verify that the user has the necessary authorizations to create materials with the selected number assignment type. This can be checked with your SAP security team.
  
  
  
  Check for User Exits or BAdIs:
  
  If there are any custom developments (user exits or BAdIs) that might affect the material creation process, review them to ensure they are not causing the issue.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for more detailed guidance on material master configuration and number assignment.
  
  
  
  Related Information:
  
  Material Master: The material master is a central repository of information about materials that an organization uses. It contains data related to purchasing, inventory management, and sales.
  Number Assignment: In SAP, number assignment can be either internal (where the system generates the number) or external (where the user specifies the number).
  Transaction Codes: Common transaction codes related to material master include:
  
  MM01: Create Material
  MM02: Change Material
  MM03: Display Material
  
  
  
  By following the above steps, you should be able to resolve the WRF_MATERIAL004 error and successfully create or modify the material master record.