How To Fix PO450 - No LPD running; A new (SAP)LPD could not be started

SAP Error Message - Details

• Message type: E = Error

• Message class: PO - Spooler message

• Message number: 450

• Message text: No LPD running; A new (SAP)LPD could not be started

What causes this issue?

You tried to print locally on your frontend. To do this, (SAP)LPD must
be installed on the frontend. As the system could not connect to
SAPLPD, it attempted to start SAPLPD. However, this attempt failed.

System Response

Output request set to "error".

How to fix this error?

The program SAPLPD.exe must be installed under Windows in the SAPLPD
directory of the SAPgui.
The command to start SAPLPD is maintained in the table TSPOPTIONS under
the "SAPLPD" key. The default is:
SAPLPD\SAPLPD.EXE -I

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message PO450 - No LPD running; A new (SAP)LPD could not be started ?

  The SAP error message "PO450 No LPD running; A new (SAP) LPD could not be started" typically indicates that the SAP system is unable to start a new Line Printer Daemon (LPD) process. This can occur for several reasons, and understanding the cause is essential for finding a solution.
  Causes:
  
  LPD Not Installed or Configured: The LPD service may not be installed or properly configured on the server where the SAP system is running.
  Service Not Running: The LPD service might not be running. This can happen if the service has crashed or was not started during system boot.
  Network Issues: There may be network connectivity issues preventing the SAP system from communicating with the LPD.
  Resource Limitations: The server may be running low on resources (e.g., memory, CPU), preventing the LPD from starting.
  Permissions Issues: The user account under which the SAP system is running may not have the necessary permissions to start the LPD.
  Configuration Errors: There may be errors in the configuration files for the LPD, leading to startup failures.
  
  Solutions:
  
  
  Check LPD Installation:
  
  Ensure that the LPD is installed on the server. If not, install it according to your operating system's guidelines.
  
  
  
  Start the LPD Service:
  
  Check if the LPD service is running. You can do this by using commands like systemctl status lpd (on Linux) or checking the Services panel on Windows. If it is not running, start it using systemctl start lpd or the appropriate command for your OS.
  
  
  
  Check Network Connectivity:
  
  Verify that there are no network issues preventing communication between the SAP system and the LPD. You can use tools like ping or telnet to test connectivity.
  
  
  
  Monitor System Resources:
  
  Check the server's resource usage (CPU, memory, disk space) to ensure that it is not overloaded. If resources are low, consider optimizing the system or upgrading hardware.
  
  
  
  Review Permissions:
  
  Ensure that the user account running the SAP system has the necessary permissions to start and manage the LPD service.
  
  
  
  Check Configuration Files:
  
  Review the configuration files for the LPD to ensure there are no syntax errors or misconfigurations. Correct any issues found.
  
  
  
  Consult Logs:
  
  Check the logs for both the SAP system and the LPD for any error messages that could provide more context on the issue.
  
  
  
  Restart SAP System:
  
  In some cases, restarting the SAP system may resolve transient issues that are preventing the LPD from starting.
  
  
  
  Related Information:
  
  Documentation: Refer to the official SAP documentation for more details on configuring and troubleshooting LPD.
  SAP Notes: Check SAP Notes for any known issues or patches related to LPD and the specific version of SAP you are using.
  Community Forums: Engage with SAP community forums or support channels for additional insights and assistance from other users who may have encountered similar issues.
  
  By following these steps, you should be able to diagnose and resolve the "PO450 No LPD running" error in your SAP environment.