How To Fix S#143 - &1 is already known as called transaction

SAP Error Message - Details

• Message type: E = Error

• Message class: S# -

• Message number: 143

• Message text: &1 is already known as called transaction

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 S#143 - &1 is already known as called transaction ?

  The SAP error message "S#143 &1 is already known as called transaction" typically indicates that there is an issue with the transaction being called or executed in the SAP system. This error can occur in various scenarios, often related to the way transactions are being handled or called within a program or a script.
  Cause:
  
  
  Duplicate Transaction Call: The error usually arises when a transaction is attempted to be called multiple times without proper handling. This can happen if a program or script tries to execute the same transaction in a loop or without checking if it is already in progress.
  
  
  Session Management Issues: If there are issues with session management, such as trying to open a new session while another session for the same transaction is already open, this error can occur.
  
  
  Incorrect Program Logic: There may be a flaw in the logic of the ABAP program or script that is causing it to attempt to call the same transaction multiple times.
  
  
  Solution:
  
  
  Check for Duplicate Calls: Review the code or script to ensure that the transaction is not being called multiple times unnecessarily. Implement checks to prevent duplicate calls.
  
  
  Session Management: Ensure that the program properly manages sessions. If a transaction is already running, the program should either wait for it to complete or handle it appropriately.
  
  
  Error Handling: Implement error handling in the program to catch this specific error and provide a user-friendly message or alternative action.
  
  
  Debugging: Use the SAP debugger to trace the execution of the program and identify where the duplicate call is being made. This can help pinpoint the exact location in the code that needs to be modified.
  
  
  Consult Documentation: Refer to SAP documentation or community forums for any specific notes or updates related to the error message, as there may be patches or updates that address this issue.
  
  
  Related Information:
  
  
  SAP Notes: Check SAP Notes for any known issues or fixes related to this error message. SAP frequently updates its knowledge base with solutions to common problems.
  
  
  Transaction Codes: Familiarize yourself with the transaction codes involved in your program to understand their behavior and how they interact with each other.
  
  
  SAP Community: Engage with the SAP Community forums where other users may have encountered similar issues and can provide insights or solutions.
  
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with an SAP Basis or ABAP expert who can provide more tailored assistance based on the specific context of your SAP environment.