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

M3564 - Overview

• 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.

M3564 - Details

• 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