How To Fix WA891 - No application server found

SAP Error Message - Details

• Message type: E = Error

• Message class: WA - Messages from Workflow Event Manager

• Message number: 891

• Message text: No application server found

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message WA891 - No application server found ?

  Certainly! Here's a detailed explanation of the SAP error message WA891 No application server found:
  
  Error Message:
  WA891 No application server found
  
  Cause:
  This error typically occurs when the SAP GUI or a client program tries to connect to an SAP system but cannot find any available application server to establish the connection. The reasons can include:
  
  No active application servers: All application servers for the specified SAP system are down or not running.
  Incorrect system alias or SAP Logon entry: The SAP Logon entry or system alias used to connect is incorrect or points to a system with no active application servers.
  Network issues: Network problems prevent the client from reaching the message server or application servers.
  Message server not reachable or down: The message server, which directs the client to an available application server, is not running or unreachable.
  Incorrect message server configuration: The message server configuration in the SAP Logon entry or in the system profile is incorrect.
  Load balancing issues: If load balancing is used, the message server cannot find any free application server to assign the user.
  
  
  Solution:
  To resolve the WA891 No application server found error, consider the following steps:
  
  
  Check the status of application servers:
  
  Use transaction SM51 on the SAP system to verify which application servers are running.
  If no application servers are running, start the required application servers.
  
  
  
  Verify the SAP Logon entry:
  
  Ensure the system alias or SAP Logon entry is correct.
  If using load balancing, verify the message server host and port are correct.
  If connecting directly to an application server, verify the application server host and instance number.
  
  
  
  Check the message server:
  
  Verify that the message server is running.
  Use transaction SMMS to check the message server status.
  Restart the message server if necessary.
  
  
  
  Network connectivity:
  
  Check network connectivity between the client and the SAP servers.
  Ping the message server and application servers from the client machine.
  Check firewall settings that might block communication.
  
  
  
  Review system profiles:
  
  Check the profile parameters related to the message server and application servers.
  Parameters like rdisp/msserv (message server port) and rdisp/mshost (message server host) should be correct.
  
  
  
  Check load balancing configuration:
  
  If load balancing is used, ensure that the message server has registered application servers.
  Check the load balancing groups and their configuration.
  
  
  
  SAP system logs:
  
  Check system logs (transaction SM21) for any related errors or warnings.
  
  
  
  
  Related Information:
  
  Transaction SM51: Display active application servers.
  Transaction SMMS: Message server monitor.
  SAP Note 0000000: (Check SAP Service Marketplace for specific notes related to WA891).
  SAP Logon configuration: Proper setup of system entries for load balancing or direct connection.
  Network troubleshooting: Use tools like ping, telnet, or traceroute to verify connectivity.
  
  
  Summary:
  The WA891 No application server found error means the SAP client cannot find any available application server to connect to. This is usually due to no running application servers, incorrect SAP Logon configuration, message server issues, or network problems. Checking the status of application servers and message server, verifying SAP Logon entries, and ensuring network connectivity typically resolves the issue.
  
  If you need help with specific commands or further troubleshooting steps, feel free to ask!