How To Fix PO536 - Server for frontend printing not started. Session missing

PO536 - Overview

• Message type: E = Error

• Message class: PO - Spooler message

• Message number: 536

• Message text: Server for frontend printing not started. Session missing

What causes this issue?

Frontend printing requires a free session to print. At the time the
print request was created, all sessions were used.

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?

End a session and try reprinting. All terminated requests at this
terminal will be re-executed.
You can also restart any printouts terminated at the current terminal
by choosing "Utilities" -> "Restart frontend printing" in transaction
SP01.

Error message extract from SAP system. Copyright SAP SE.

PO536 - Details

• The SAP error message "PO536 Server for frontend printing not started. Session missing" typically occurs when there is an issue with the configuration or availability of the print server that handles frontend printing requests. This error can arise in various scenarios, such as when trying to print from SAP GUI or when using certain SAP applications that require printing capabilities.
  Causes:
  
  Print Server Not Running: The print server responsible for handling frontend print requests may not be started or may have crashed.
  Session Issues: The SAP GUI session may not be properly established, leading to a failure in communication with the print server.
  
  Configuration Issues: Incorrect configuration settings in the SAP system or the print server can lead to this error.
  Network Issues: Network connectivity problems between the client machine and the SAP server can prevent the print job from being processed.
  User Authorization: The user may not have the necessary authorizations to access the print