How To Fix GB027 - Exit & has the incorrect type

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 027

• Message text: Exit & has the incorrect type

What causes this issue?

The exit type of the system exit or user exit cannot be used in this
condition.
This may be the case, if:
in a condition, you have used a user exit that does not match your
validation or substitution callup point.
&BEISPIEL& In FI, you cannot use a
user exit
that refers to the complete document structure for callup point
"document line".
in the substitution, you have used a user exit whose definition of the
parameters (in the FORM routine GET_EXIT_TITLES) does not coincide with
how it is used.
&BEISPIEL& If you select the option "Only exit" when choosing the
substitution fields,
you cannot enter a user exit that is defined with a parameter.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

System Response

How to fix this error?

Use a different exit or check the definition in the exit form pool.
The routine GET_EXIT_TITLES in the form pool specifies the exit type.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message GB027 - Exit & has the incorrect type ?

  The SAP error message GB027, which states "Exit & has the incorrect type," typically occurs in the context of SAP's enhancement framework, particularly when dealing with user exits or customer exits. This error indicates that there is a mismatch between the expected type of the exit and the type that has been defined or implemented.
  Cause:
  
  Incorrect Exit Type: The exit that is being called or referenced does not match the expected type. For example, if a function module is expected but a subroutine is provided, this error can occur.
  Configuration Issues: There may be issues in the configuration of the user exit or enhancement, leading to the system not recognizing the exit correctly.
  Implementation Errors: If the exit has been implemented incorrectly or if there are changes in the code that do not align with the expected signature of the exit, this error can arise.
  Version Mismatch: If there are different versions of the code or enhancements in different environments (e.g., development vs. production), this can lead to inconsistencies.
  
  Solution:
  
  Check Exit Definition: Verify the definition of the exit in the SAP system. Ensure that the exit you are trying to use is correctly defined and matches the expected type.
  Review Implementation: If you have implemented a user exit, review the code to ensure that it adheres to the expected parameters and return types. Make sure that the function module or subroutine is implemented correctly.
  Consistency Check: Perform a consistency check in the system to ensure that all enhancements and exits are correctly configured and that there are no discrepancies.
  Debugging: Use the debugging tools in SAP to trace the execution and identify where the type mismatch is occurring. This can help pinpoint the exact location of the error.
  Consult Documentation: Refer to SAP documentation or notes related to the specific exit you are working with. There may be specific guidelines or known issues that can provide insight.
  Transport Issues: If the issue arose after a transport, check if the transport included all necessary objects and that they are in sync with the target environment.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the specific exit or enhancement you are working with.
  SAP Community: Engage with the SAP Community forums to see if others have encountered similar issues and what solutions they found.
  Enhancement Framework: Familiarize yourself with the SAP enhancement framework, including user exits, customer exits, and BAdIs (Business Add-Ins), to better understand how they work and how to troubleshoot issues.
  
  If the problem persists after trying the above solutions, consider reaching out to SAP support for further assistance.