00303 - You cannot process more than one session with this function

SAP Error Message - Details

• Message type: E = Error

• Message class: 00 -

• Message number: 303

• Message text: You cannot process more than one session with this function

What causes this issue?

The following activities can only be used for a session:
analysis
statistics
queue (dump)
log

System Response

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

How to fix this error?

Only individual session processing is possible, that is, do not
select any block areas.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 00303 - You cannot process more than one session with this function ?

  The SAP error message "00303: You cannot process more than one session with this function" typically occurs when a user attempts to execute a function or transaction that is designed to allow only a single session at a time. This can happen in various scenarios, such as when trying to run a report or transaction that locks the session for processing.
  Cause:
  
  Multiple Sessions: The user is trying to execute a transaction or function that is already running in another session.
  Locking Mechanism: Some transactions or functions in SAP are designed to prevent concurrent execution to avoid data inconsistencies or conflicts.
  User Configuration: The user might have multiple sessions open, and the specific function does not allow concurrent access.
  
  Solution:
  
  Close Other Sessions: Check if you have other sessions open that are executing the same transaction or function. Close those sessions before trying again.
  Log Off and Log In: If you are unsure which session is causing the issue, log off from SAP and log back in to clear any existing sessions.
  Use Transaction Codes: If you are using a specific transaction code, ensure that you are not trying to execute it in multiple windows or tabs.
  Check for Background Jobs: If the function is being executed as a background job, ensure that it is completed before trying to run it again.
  Consult with SAP Basis Team: If the issue persists, it may be necessary to consult with your SAP Basis team to check for any system-level locks or configurations that might be causing the issue.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific patches or updates related to the error message.
  Transaction Logs: Review transaction logs to identify if there are any background processes or jobs that might be causing the lock.
  User Authorizations: Ensure that the user has the necessary authorizations to execute the function without conflicts.
  
  By following these steps, you should be able to resolve the error message and continue with your work in SAP.