How To Fix SLIC203 - Server list was not received by the message server

SAP Error Message - Details

• Message type: E = Error

• Message class: SLIC - saplicense Messages

• Message number: 203

• Message text: Server list was not received by the message server

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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Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message SLIC203 - Server list was not received by the message server ?

  The SAP error message SLIC203: Server list was not received by the message server typically indicates an issue with the communication between the SAP application server and the message server. This error can occur in various scenarios, such as during system startup, when trying to log in, or when performing certain operations that require communication with the message server.
  Causes:
  
  Network Issues: There may be network connectivity problems between the application server and the message server.
  Configuration Errors: Incorrect configuration settings in the SAP system, such as the instance profile or the message server settings.
  Message Server Down: The message server may not be running or may have crashed.
  Firewall Restrictions: Firewalls or security settings may be blocking the necessary ports for communication.
  Load Balancer Issues: If a load balancer is used, it may not be properly configured to route traffic to the message server.
  SAP Kernel Issues: There may be issues with the SAP kernel version or patches that need to be applied.
  
  Solutions:
  
  
  Check Network Connectivity:
  
  Ensure that the application server can reach the message server. You can use tools like ping or telnet to test connectivity.
  Verify that the correct hostname and port are being used in the configuration.
  
  
  
  Verify Message Server Status:
  
  Check if the message server is running. You can do this by logging into the SAP system and checking the instance status.
  Restart the message server if necessary.
  
  
  
  Review Configuration Settings:
  
  Check the instance profile parameters related to the message server (e.g., ms/port, ms/host).
  Ensure that the SAP Message Server is correctly configured in the SAP GUI connection settings.
  
  
  
  Firewall and Security Settings:
  
  Ensure that the necessary ports (default is 3600 for the message server) are open and not blocked by firewalls.
  Check any security settings that may restrict access to the message server.
  
  
  
  Load Balancer Configuration:
  
  If using a load balancer, ensure it is correctly configured to route requests to the message server.
  Check the health checks and routing rules.
  
  
  
  Check SAP Kernel and Patches:
  
  Ensure that the SAP kernel is up to date and that all necessary patches have been applied.
  Review SAP notes related to the specific version you are using for any known issues.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific issues related to the error message SLIC203. SAP frequently updates their knowledge base with solutions and workarounds.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  Logs: Review the system logs (dev_ms, dev_w0, etc.) for any additional error messages or warnings that could provide more context about the issue.
  
  If the problem persists after trying the above solutions, it may be necessary to involve your SAP Basis team or SAP support for further investigation.