How To Fix PO747 - Host &1 cannot be reached or (SAP-)LPD is not running there

SAP Error Message - Details

• Message type: E = Error

• Message class: PO - Spooler message

• Message number: 747

• Message text: Host &1 cannot be reached or (SAP-)LPD is not running there

What causes this issue?

The specified host could not be accessed. Or, there is no suitable
receiving program running on the host for the print data. This can be a
SAPLPD or a Berkeley-LPD-compatible program.

System Response

First, several print output attempts are made and are marked as having
errors (if necessary).

How to fix this error?

Check whether the receiving program is running on the specified host.
Check whether the network is functioning correctly.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message PO747 - Host &1 cannot be reached or (SAP-)LPD is not running there ?

  The SAP error message PO747 indicates that the system is unable to reach the specified host or that the LPD (Line Printer Daemon) service is not running on that host. This error typically occurs when trying to print from SAP to a network printer.
  Causes:
  
  Network Issues: The host specified in the print configuration may be unreachable due to network problems, such as incorrect IP address, DNS issues, or firewall settings blocking the connection.
  LPD Service Not Running: The LPD service on the target host may not be running or may not be configured correctly to accept print jobs.
  Incorrect Printer Configuration: The printer configuration in SAP may be incorrect, including wrong host name, port number, or printer settings.
  Access Rights: The user or system may not have the necessary permissions to access the printer on the specified host.
  
  Solutions:
  
  
  Check Network Connectivity:
  
  Use tools like ping or traceroute to check if the host is reachable from the SAP server.
  Ensure that there are no network issues or outages affecting connectivity.
  
  
  
  Verify LPD Service:
  
  Ensure that the LPD service is installed and running on the target host. You can check this by logging into the host and using commands like service lpd status or systemctl status lpd (depending on the operating system).
  If the service is not running, start it using the appropriate command.
  
  
  
  Review Printer Configuration in SAP:
  
  Go to transaction SPAD in SAP to check the printer configuration.
  Verify that the host name, port number, and other settings are correct.
  Ensure that the printer is defined as an LPD printer and that the correct LPD queue name is specified.
  
  
  
  Check Firewall Settings:
  
  Ensure that any firewalls between the SAP server and the printer host allow traffic on the port used by LPD (usually port 515).
  
  
  
  Test Printing:
  
  After making changes, try to print a test page from SAP to see if the issue is resolved.
  
  
  
  Consult Logs:
  
  Check the SAP application logs and the LPD logs on the host for any additional error messages that could provide more context about the issue.
  
  
  
  Related Information:
  
  LPD Protocol: LPD is a network printing protocol that allows computers to send print jobs to printers over a network.
  SAP Transaction Codes: Familiarize yourself with transaction codes like SPAD (Spool Administration) for managing printers and spool requests in SAP.
  Documentation: Refer to SAP Help documentation for detailed instructions on configuring printers and troubleshooting printing issues.
  
  If the problem persists after trying the above solutions, it may be necessary to involve your network or system administrator for further investigation.