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

00303 - Overview

• 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.

00303 - Details

• 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