How To Fix 28056 - Characteristic &1 not alphanumeric

28056 - Overview

• Message type: E = Error

• Message class: 28 - Configuration

• Message number: 056

• Message text: Characteristic &1 not alphanumeric

What causes this issue?

The system syntax check discovered an error which is probably due to
the fact that the characteristic entered is not alphanumeric (CHAR
format), even though only alphanumeric characteristics can be entered
here.

System Response

The cursor marks the incorrect characteristic.

How to fix this error?

Check the expression at the cursor. Make any necessary corrections.
Please see also other possible causes of error (messages).

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 28056 - Characteristic &1 not alphanumeric ?

  The SAP error message 28056, which states "Characteristic &1 not alphanumeric," typically occurs when a characteristic in a SAP system (often in the context of SAP Variant Configuration or similar modules) contains non-alphanumeric characters. This can happen during data entry, configuration, or when processing certain transactions.
  
  Cause:
  
  Non-Alphanumeric Characters: The characteristic name or value contains special characters, spaces, or symbols that are not considered alphanumeric (i.e., letters A-Z, a-z, and numbers 0-9).
  Incorrect Configuration: The characteristic may have been incorrectly defined in the system, allowing for invalid characters.
  Data Import Issues: If data is being imported from an external source, it may contain invalid characters that are not allowed in SAP.
  
  
  Solution:
  
  
  Check Characteristic Definition:
  
  Go to the transaction where the characteristic is defined (e.g., transaction CT04 for characteristics).
  Ensure that the characteristic name and its values only contain alphanumeric characters.
  
  
  
  Modify Characteristic Values:
  
  If you are entering or modifying characteristic values, ensure that they do not include any special