How To Fix M3564 - The material number contains special characters that are not allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: M3 - Material Master

• Message number: 564

• Message text: The material number contains special characters that are not allowed

What causes this issue?

For technical reasons, certain special characters may not be used as
the material number with external number assignment. These characters
are as follows:
Ampersand (&)
Asterisk (*)
Comma (,)

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message M3564 - The material number contains special characters that are not allowed ?

  The SAP error message M3564 indicates that the material number you are trying to use contains special characters that are not permitted. This error typically arises when creating or modifying material master records in SAP.
  Cause:
  The error is triggered when the material number includes characters that are not allowed according to the configuration settings in the SAP system. Common disallowed characters may include:
  
  Special symbols (e.g., @, #, $, %, &, *, etc.)
  Spaces or leading/trailing spaces
  Certain punctuation marks
  
  Solution:
  To resolve this error, you should:
  
  
  Check the Material Number: Review the material number you are trying to enter. Ensure that it only contains valid characters. Typically, valid characters include:
  
  Alphanumeric characters (A-Z, 0-9)
  Underscores (_)
  Dashes (-)
  
  
  
  Modify the Material Number: If the material number contains any disallowed characters, modify it to remove or replace those characters with valid ones.
  
  
  Consult Configuration Settings: If you are unsure about which characters are allowed, consult with your SAP administrator or check the configuration settings in the material master data settings. The allowed character set can sometimes be defined in the system settings.
  
  
  Use Transaction Codes: If you are using a specific transaction code to create or modify the material, ensure that you are following the correct procedures and guidelines for that transaction.
  
  
  Test with a Different Material Number: If you continue to encounter issues, try using a different material number that you know is valid to see if the problem persists.
  
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for material master data to understand the rules and guidelines for material number creation.
  User Exits and Enhancements: In some cases, custom user exits or enhancements may affect how material numbers are validated. If you suspect this might be the case, consult with your development team.
  SAP Notes: Check for any relevant SAP Notes that might address this issue or provide additional guidance.
  
  By following these steps, you should be able to resolve the M3564 error and successfully create or modify your material master records in SAP.