How To Fix OO663 - Source-based mode is not allowed when modification assistant is enabled

SAP Error Message - Details

• Message type: E = Error

• Message class: OO - Class Builder/API

• Message number: 663

• Message text: Source-based mode is not allowed when modification assistant is enabled

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message OO663 - Source-based mode is not allowed when modification assistant is enabled ?

  The SAP error message OO663, which states "Source-based mode is not allowed when modification assistant is enabled," typically occurs in the context of using the Modification Assistant in SAP. This error is related to the way modifications are handled in the system, particularly when trying to use source-based modifications while the Modification Assistant is active.
  
  Cause:
  The error arises when you attempt to use source-based modifications (like modifying the source code of standard SAP objects) while the Modification Assistant is enabled. The Modification Assistant is a tool that helps manage modifications to standard SAP objects, and it restricts certain types of modifications to ensure that they can be tracked and managed properly.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Disable the Modification Assistant: If you are sure that you want to proceed with source-based modifications, you can disable the Modification Assistant. This can typically be done in the transaction code SE80