How To Fix LAW2_MESSAGES187 - System &1: The connection test was not successful

SAP Error Message - Details

• Message type: E = Error

• Message class: LAW2_MESSAGES - LAW 2.0 Message Class

• Message number: 187

• Message text: System &1: The connection test was not successful

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message LAW2_MESSAGES187 - System &1: The connection test was not successful ?

  The SAP error message LAW2_MESSAGES187 indicates that a connection test to a specified system (denoted as &1) was not successful. This error typically arises in scenarios involving system connections, such as when using the Landscape Management Database (LMDB) or when configuring system connections in SAP Solution Manager.
  Causes:
  
  Network Issues: There may be network connectivity problems between the systems involved. This could be due to firewalls, incorrect IP addresses, or DNS resolution issues.
  Incorrect Configuration: The connection parameters (such as hostname, port, or credentials) may be incorrectly configured in the SAP system.
  Service Availability: The target system may not be running or may not have the necessary services (like RFC or HTTP) active.
  Authorization Issues: The user credentials used for the connection may not have the necessary authorizations to access the target system.
  SAP Router Issues: If an SAP router is being used, there may be issues with the router configuration or connectivity.
  
  Solutions:
  
  
  Check Network Connectivity:
  
  Use tools like ping or telnet to verify that the target system is reachable from the source system.
  Ensure that there are no firewall rules blocking the connection.
  
  
  
  Verify Connection Parameters:
  
  Go to the configuration settings where the connection is defined and ensure that the hostname, port, and other parameters are correct.
  If using an SAP router, ensure that the router string is correctly specified.
  
  
  
  Check Service Status:
  
  Ensure that the target SAP system is up and running.
  Check that the necessary services (like RFC) are active in the target system.
  
  
  
  Review User Credentials:
  
  Verify that the user ID and password used for the connection are correct.
  Ensure that the user has the necessary authorizations to connect to the target system.
  
  
  
  SAP Router Configuration:
  
  If applicable, check the configuration of the SAP router to ensure it is set up correctly and that it can communicate with both systems.
  
  
  
  Logs and Traces:
  
  Check the system logs (transaction SM21) and traces (transaction ST01) for any additional error messages that might provide more context about the failure.
  
  
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like SM59 (RFC Destinations) to check and configure the connection settings.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address specific issues related to this error message.
  Documentation: Review the SAP documentation for the specific version of the system you are working with, as there may be version-specific considerations.
  
  If the issue persists after checking the above points, consider reaching out to your SAP Basis team or SAP support for further assistance.