How To Fix 28064 - Class (&)& not valid

SAP Error Message - Details

• Message type: E = Error

• Message class: 28 - Configuration

• Message number: 064

• Message text: Class (&)& not valid

What causes this issue?

The syntax check found an error in an entry for a class. The
combination of class type and class number is incorrect.

System Response

The cursor shows where the error occurs in your entry.

How to fix this error?

A class is accessed via the class type and language-independent class
number, for example:
(300)TV_SET
Check whether the class type at the cursor, &V1&, exists, and whether
the class you entered, &V2&, exists for this class type and is valid.
Check 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 28064 - Class (&)& not valid ?

  The SAP error message "28064 Class (&)& not valid" typically indicates that there is an issue with the classification system in SAP, specifically related to the class type or class name that is being referenced. This error can occur in various contexts, such as when trying to create or modify a classification, or when attempting to assign a class to an object.
  Cause:
  
  Invalid Class Name or Type: The class name or type being referenced does not exist in the system or is incorrectly specified.
  Authorization Issues: The user may not have the necessary authorizations to access or modify the specified class.
  Data Inconsistency: There may be inconsistencies in the classification data, such as missing entries in the classification tables.
  Configuration Issues: The classification system may not be properly configured, leading to issues with class recognition.
  
  Solution:
  
  Check Class Name and Type: Verify that the class name and type you are trying to use are correct. You can do this by navigating to the classification view in SAP and checking the existing classes.
  Authorization Check: Ensure that the user has the necessary authorizations to access and modify the class. You may need to consult with your SAP security team to verify this.
  Data Consistency Check: Use transaction codes like CL02 (Change Class) or CL03 (Display Class) to check if the class exists and is correctly configured. If there are inconsistencies, you may need to correct them.
  Configuration Review: Review the configuration settings for the classification system to ensure that everything is set up correctly. This may involve checking the class types and their settings in the customizing (SPRO) area.
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error message. There may be patches or updates that resolve known issues.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CL01 (Create Class), CL02 (Change Class), and CL03 (Display Class) for managing classes in the classification system.
  SAP Documentation: Refer to the official SAP documentation for detailed information on classification and the classification system.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  
  If the problem persists after trying the above solutions, it may be beneficial to involve your SAP Basis or technical team for further investigation.