How To Fix 55894 - Internal error: Order of subscreen function modules (&1 ->&2 &3)

SAP Error Message - Details

• Message type: E = Error

• Message class: 55 - Messages for development class EENO

• Message number: 894

• Message text: Internal error: Order of subscreen function modules (&1 ->&2 &3)

What causes this issue?

The program has linked a subscreen and ignored the calling sequence of
the administration function modules.
<ZH>Parameters</>
&V1& - NOTICE or tab
&V2& - Name of the function module where the error was established
&V3& - Name of the function module that could not be found at its call
position
Possible reasons:
OPEN function module was not called first
PAI_AFTER module was not called directly after PAI_BEFORE module.

System Response

The system cannot execute your request due to a program error.

How to fix this error?

Note the following:
message text and message number
name of the function module
transaction/report
environment mode
entries leading to this error.
Send this information with a problem message to SAP.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 55894 - Internal error: Order of subscreen function modules (&1 ->&2 &3) ?

  The SAP error message 55894, which states "Internal error: Order of subscreen function modules (&1 ->&2 &3)," typically indicates an issue with the sequence in which function modules are being called in a subscreen context. This error can arise in various scenarios, particularly when dealing with custom screens or enhancements in SAP.
  Cause:
  
  Incorrect Function Module Sequence: The error often occurs when the function modules for subscreens are not called in the correct order. Each subscreen may have dependencies on the previous ones, and if they are not executed in the expected sequence, it can lead to this internal error.
  Custom Development Issues: If there are custom enhancements or modifications in the code, they might not adhere to the expected flow of function module calls.
  Configuration Issues: Sometimes, the configuration of the subscreen or the main screen might not be set up correctly, leading to this error.
  
  Solution:
  
  Check Function Module Order: Review the code where the subscreen function modules are called. Ensure that they are being executed in the correct order as expected by the SAP standard.
  Debugging: Use the SAP debugger to trace the execution of the function modules. This can help identify where the order is incorrect or where the error is being triggered.
  Review Custom Code: If there are any custom enhancements, review them to ensure they are not interfering with the standard flow of function module calls.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that might address this specific error. There may be patches or updates that resolve known issues related to this error.
  Consult Documentation: Review the documentation for the specific transaction or module you are working with to ensure that you are following the correct procedures for subscreen handling.
  
  Related Information:
  
  Transaction Codes: Depending on the context, you may want to look into transaction codes related to screen modifications, such as SE80 (Object Navigator) or SE41 (Menu Painter).
  SAP Community: Engaging with the SAP Community forums can provide insights from other users who may have encountered and resolved similar issues.
  SAP Support: If the issue persists and is critical, consider reaching out to SAP Support for assistance, providing them with detailed information about the error and the context in which it occurs.
  
  By following these steps, you should be able to diagnose and resolve the error message 55894 in your SAP environment.