How To Fix W0065 - Internal class number not found

W0065 - Overview

• Message type: E = Error

• Message class: W0 - Customizing - ISR

• Message number: 065

• Message text: Internal class number not found

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message W0065 - Internal class number not found ?

  Certainly! Here's a detailed explanation regarding the SAP error message W0065: Internal class number not found:
  
  SAP Error Message: W0065 - Internal class number not found
  
  
  Cause:
  The error W0065 typically occurs when the system tries to access or reference an internal class number that does not exist or cannot be found in the classification system. This usually happens in scenarios involving:
  
  Classification data processing (e.g., classifying materials, equipment, or documents).
  When the internal class number (which is an internal identifier for a class in SAP Classification system) is missing, deleted, or incorrectly referenced.
  Data inconsistencies or missing entries in tables related to classes, such as KLAH (Class header) or KSSK (Characteristic values).
  Custom programs or transactions trying to access a class number that is invalid or no longer exists.
  
  
  Explanation:
  
  In SAP Classification, each class has an internal class number (a unique identifier).
  When a process or program tries to retrieve or manipulate a class using an internal class