How To Fix LAW2_MESSAGES185 - System &1: Connection test to target &2 was unsuccessful

SAP Error Message - Details

• Message type: E = Error

• Message class: LAW2_MESSAGES - LAW 2.0 Message Class

• Message number: 185

• Message text: System &1: Connection test to target &2 was unsuccessful

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 LAW2_MESSAGES185 - System &1: Connection test to target &2 was unsuccessful ?

  The SAP error message LAW2_MESSAGES185 indicates that there was an unsuccessful connection test to a target system. This error typically occurs in the context of system landscape management, particularly when trying to establish a connection between systems in a landscape (e.g., during system copy, system refresh, or when configuring system connections).
  Causes:
  
  Network Issues: There may be network connectivity problems between the source and target systems. This could be due to firewalls, routing issues, or network outages.
  Incorrect Configuration: The connection parameters (such as hostname, port, or instance number) may be incorrectly configured in the SAP system.
  Target System Down: The target system may be down or not running, which would prevent a successful connection.
  Authorization Issues: The user credentials used for the connection may not have the necessary authorizations to access the target system.
  SAP Router Issues: If you are using an SAP router, there may be issues with the router configuration or it may not be reachable.
  
  Solutions:
  
  
  Check Network Connectivity:
  
  Use tools like ping or telnet to check if the target system is reachable from the source system.
  Ensure that there are no firewalls blocking the connection.
  
  
  
  Verify Connection Parameters:
  
  Double-check the connection settings in the SAP system (transaction SM59 for RFC connections).
  Ensure that the hostname, port, and instance number are correct.
  
  
  
  Check Target System Status:
  
  Ensure that the target SAP system is up and running. You can check this by logging into the target system or checking its status in the SAP Management Console.
  
  
  
  Review User Authorizations:
  
  Ensure that the user credentials used for the connection have the necessary authorizations to access the target system.
  
  
  
  SAP Router Configuration:
  
  If using an SAP router, verify that the router is correctly configured and operational. Check the router logs for any errors.
  
  
  
  Check Logs:
  
  Review the logs in both the source and target systems for any additional error messages that may provide more context about the connection failure.
  
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  SM59: To manage RFC connections.
  SICF: To check and manage HTTP services.
  ST22: To check for dumps that may provide more information about the error.
  
  
  
  SAP Notes: 
  
  Check SAP Notes related to connection issues for specific guidance or patches that may address known issues.
  
  
  
  Documentation: 
  
  Refer to SAP Help documentation for detailed information on configuring system connections and troubleshooting connectivity issues.
  
  
  
  By following these steps, you should be able to identify and resolve the cause of the connection test failure indicated by the error message LAW2_MESSAGES185.