How To Fix /FTI/AUTHORING_ERROR040 - MPC class '&1' has syntax errors

SAP Error Message - Details

• Message type: E = Error

• Message class: /FTI/AUTHORING_ERROR -

• Message number: 040

• Message text: MPC class '&1' has syntax errors

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?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

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.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message /FTI/AUTHORING_ERROR040 - MPC class '&1' has syntax errors ?

  The SAP error message /FTI/AUTHORING_ERROR040 MPC class '&1' has syntax errors typically indicates that there are syntax errors in the Multi-Purpose Class (MPC) definition in the SAP Gateway framework. This error is often encountered when working with OData services in SAP.
  Cause:
  
  Syntax Errors in MPC Class: The MPC class (Model Provider Class) may contain syntax errors, such as missing semicolons, incorrect method definitions, or other coding mistakes.
  Inconsistent Annotations: Annotations in the MPC class may not be correctly defined or may be inconsistent with the underlying data model.
  Changes Not Activated: If changes were made to the MPC class but not activated, the system may still reference the old version, leading to errors.
  Transport Issues: If the class was transported from another system, it may not have been properly adjusted for the target environment.
  
  Solution:
  
  Check Syntax: Open the MPC class in the ABAP Workbench (transaction SE80 or SE24) and check for any syntax errors. Use the syntax check feature to identify issues.
  Activate the Class: Ensure that the MPC class is activated. You can do this by navigating to the class in SE80 or SE24 and activating it.
  Review Annotations: Verify that all annotations in the MPC class are correctly defined and consistent with the data model.
  Debugging: If the error persists, you can debug the class to identify the exact line causing the issue.
  Transport Adjustments: If the class was transported, ensure that all dependencies and related objects are also transported and activated in the target system.
  Check for Updates: Ensure that your SAP system is up to date with the latest support packages and notes, as there may be fixes related to the error.
  
  Related Information:
  
  Transaction Codes: Use SE80 (Object Navigator) or SE24 (Class Builder) to access and modify the MPC class.
  SAP Notes: Check the SAP Support Portal for any relevant notes that may address known issues with MPC classes or OData services.
  Documentation: Refer to the SAP Gateway documentation for best practices on creating and maintaining MPC classes.
  
  If you continue to experience issues after following these steps, consider reaching out to your SAP Basis or development team for further assistance.