How To Fix PO781 - Cannot read list of frontend printers

PO781 - Overview

• Message type: E = Error

• Message class: PO - Spooler message

• Message number: 781

• Message text: Cannot read list of frontend printers

What causes this issue?

The system attempted to use a RFC to read the list of printers defined
on the frontend and failed.

System Response

The system suggests you use the printer maintained for the output
device.

How to fix this error?

Check the installation.

Procedure for System Administrators

Make sure the LPRINT program is installed on the frontend. In addition,
an RFC connection must be possible using the destination "SAPGUI" or
"LOCAL_PRINT".

Error message extract from SAP system. Copyright SAP SE.

PO781 - Details

• The SAP error message "PO781 Cannot read list of frontend printers" typically occurs when the SAP system is unable to retrieve the list of available frontend printers for a user. This can happen for several reasons, and here are some common causes, solutions, and related information:
  Causes:
  
  Network Issues: There may be connectivity problems between the SAP GUI and the printer server.
  Printer Configuration: The frontend printer may not be properly configured in the SAP system or on the client machine.
  User Authorization: The user may not have the necessary authorizations to access the printer list.
  SAP GUI Settings: Incorrect settings in the SAP GUI can prevent the system from accessing the printer list.
  Frontend Printer Driver Issues: The printer drivers on the client machine may be outdated or not installed correctly.
  
  Solutions:
  
  Check Network Connectivity: Ensure that the client machine has a stable network connection and can communicate with the printer server.
  Verify Printer Configuration:
  Go to the SAP