How To Fix W0064 - Combination of class type/class does not exist

W0064 - Overview

• Message type: E = Error

• Message class: W0 - Customizing - ISR

• Message number: 064

• Message text: Combination of class type/class does not exist

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.

What else can you do?

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Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

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W0064 - Details

• Certainly! Here's a detailed explanation for the SAP error message W0064: Combination of class type/class does not exist:
  
  Error Message
  W0064: Combination of class type/class does not exist
  
  Cause
  This warning message occurs when you try to assign or use a class in SAP that does not exist for the specified class type. In SAP, classes are categorized by class types (e.g., 001 for Material Classes, 300 for Customer Classes, etc.). If you specify a class type and a class that is not defined or does not exist under that class type, the system issues this warning.
  Common scenarios include:
  
  Entering a class that has not been created or activated in the system.
  Using an incorrect or mismatched class type and class combination.
  Typographical errors in the class or class type fields.
  Attempting to assign a class in a transaction or program where the class is not valid.
  
  
  Solution
  To resolve this warning, follow these steps:
  
  
  Verify Class Type and Class:
  
  Check the