How To Fix GB306 - User exit form pool & contains a syntax error

SAP Error Message - Details

• Message type: E = Error

• Message class: GB - Messages used by the Boolean code generator

• Message number: 306

• Message text: User exit form pool & contains a syntax error

What causes this issue?

User exit formpool &V1& contains a syntax error in line &V2&. This can
happen when you save the user exit formpool without first performing
a syntax check.

System Response

Code for the callup of the user exit is not generated or the selection
check contains a syntax error.

How to fix this error?

Remove the syntax error from the formpool for the user exit. More
detailed information on the subject of user exit formpools is available
under the keyword <DS:DE.EX_PROG>User exit formpools </>.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message GB306 - User exit form pool & contains a syntax error ?

  The SAP error message GB306 indicates that there is a syntax error in a user exit form pool. This typically occurs when there is an issue with the ABAP code in the user exit, which is a custom enhancement point in SAP where developers can add their own logic.
  Cause:
  
  Syntax Errors: The most common cause is a syntax error in the ABAP code. This could be due to missing keywords, incorrect variable names, or other coding mistakes.
  Incompatible Changes: If the user exit was modified after an upgrade or patch, it might not be compatible with the new version of the SAP system.
  Missing Objects: If the user exit references objects (like tables, fields, or function modules) that do not exist or have been changed, it can lead to syntax errors.
  Improper Activation: If the user exit has not been properly activated after changes, it may lead to errors when the system tries to execute it.
  
  Solution:
  
  Check Syntax: Open the user exit in the ABAP Editor (transaction SE38 or SE80) and check for syntax errors. You can use the "Check" function (Ctrl + F2) to identify issues.
  Review Code Changes: If the user exit was recently modified, review the changes for any mistakes. Compare it with a previous version if available.
  Activate the Program: Ensure that the user exit is activated. You can do this by going to the ABAP Editor and activating the program.
  Debugging: If the error persists, you can use the debugger to step through the code and identify where the syntax error occurs.
  Consult Documentation: Check SAP notes or documentation related to the specific user exit for any known issues or required changes.
  Revert Changes: If the issue arose after a recent change and you cannot find the error, consider reverting to a previous version of the code that was working correctly.
  
  Related Information:
  
  Transaction Codes: Use SE80 (Object Navigator) or SE38 (ABAP Editor) to access and modify user exits.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address known issues with specific user exits.
  Debugging Tools: Familiarize yourself with debugging tools in SAP to help identify and resolve issues in ABAP code.
  User Exits: Understand the specific user exit you are working with, as different exits may have different requirements and contexts.
  
  If you continue to experience issues after following these steps, consider reaching out to your SAP Basis or ABAP development team for further assistance.