How To Fix GB308 - User exit & not declared in form pool &

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 308

• Message text: User exit & not declared in form pool &

What causes this issue?

User exit &V1& is either not defined or not declared in formpool &V2&.

System Response

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

How to fix this error?

You define your user exit when you create user exit &V1& in formpool
&V2&, which is entered in table T80D.
You declare your user exit &V1& or the passing parameters required for
it when you make an entry in the FORM routine GET_EXIT_TITLES in
formpools &V2&.
You can find more information about user exits 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 GB308 - User exit & not declared in form pool & ?

  The SAP error message GB308 typically indicates that a user exit has not been declared in the specified form pool. This error can occur in various scenarios, particularly when working with SAP forms (like SAPscript or Smart Forms) and custom enhancements.
  Cause:
  
  Missing Declaration: The user exit you are trying to use has not been declared in the form pool. This can happen if the user exit is not properly defined in the associated program or form.
  Incorrect Form Pool: The form pool you are working with may not be the correct one where the user exit is defined.
  Typographical Errors: There may be a typo in the name of the user exit or in the way it is being called in the form.
  Transport Issues: If the user exit was recently transported from another system, it may not have been properly imported or activated in the target system.
  
  Solution:
  
  Check Declaration: Ensure that the user exit is declared in the form pool. You can do this by going to the form pool in transaction SE71 (for SAPscript) or SE78 (for Smart Forms) and checking if the user exit is defined.
  Correct Form Pool: Verify that you are working in the correct form pool. If you have multiple versions or copies, make sure you are editing the right one.
  Review Code: Look for any typographical errors in the user exit name in both the form and the program where it is being called.
  Activate Changes: If you have made changes to the user exit or the form, ensure that you activate them. In transaction SE80, you can activate the object after making changes.
  Transport Check: If the user exit was transported, check the transport logs to ensure that it was successfully imported and activated in the target system.
  Debugging: If the issue persists, consider debugging the program to see where the error is being triggered and gather more context about the failure.
  
  Related Information:
  
  User Exits: User exits are predefined points in the SAP standard programs where you can add your own custom code. They are often used to enhance the functionality of standard SAP applications without modifying the original code.
  Form Pools: Form pools are containers for SAPscript forms or Smart Forms. Each form pool can contain multiple forms and associated user exits.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE71 (SAPscript), SE78 (Smart Forms), SE80 (Object Navigator), and SE37 (Function Modules) for managing user exits and forms.
  
  If you continue to experience issues, consider reaching out to your SAP Basis or ABAP team for further assistance, as they may have additional insights or access to system logs that can help diagnose the problem.