How To Fix RSTT0026 - Function module &1 (item &2) was not ended correctly

SAP Error Message - Details

• Message type: E = Error

• Message class: RSTT0 - Trace Tool: Message Class Engine Layer

• Message number: 026

• Message text: Function module &1 (item &2) was not ended correctly

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 RSTT0026 - Function module &1 (item &2) was not ended correctly ?

  The SAP error message RSTT0026 indicates that a function module was not ended correctly during its execution. This error typically arises in the context of performance analysis or tracing, particularly when using the SAP Transaction ST05 (SQL Trace) or ST12 (Performance Analysis).
  Cause:
  
  Incomplete Execution: The function module may have encountered an unexpected termination or error during its execution, leading to an incomplete state.
  System Issues: There could be underlying system issues, such as memory problems, database locks, or other resource constraints that prevent the function module from completing its execution.
  Coding Errors: There may be issues in the custom code or enhancements that are causing the function module to fail.
  Trace Settings: If tracing is enabled, it might interfere with the normal execution of the function module, especially if the trace is not properly configured.
  
  Solution:
  
  Check Logs: Review the application logs (transaction SLG1) and system logs (transaction SM21) for any related error messages that could provide more context on why the function module did not end correctly.
  Debugging: If you have access to the code, you can debug the function module to identify where it is failing. Look for any exceptions or errors that are not being handled properly.
  Review Trace Settings: If you are using SQL Trace or Performance Trace, ensure that the settings are correct and that they are not interfering with the execution of the function module.
  System Health Check: Perform a health check of the SAP system to ensure that there are no underlying issues such as memory shortages, database locks, or other performance bottlenecks.
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that might address this specific error message or provide patches or updates that could resolve the issue.
  Re-execute the Function: If the issue was transient, try re-executing the function module to see if the error persists.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as ST05 (SQL Trace), ST12 (Performance Analysis), SLG1 (Application Log), and SM21 (System Log).
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  SAP Support: If the issue persists and you have a support contract, consider reaching out to SAP Support for assistance.
  
  By following these steps, you should be able to diagnose and potentially resolve the RSTT0026 error in your SAP environment.