How To Fix SR027 - Connection error: Gateway or target system not active

SAP Error Message - Details

• Message type: E = Error

• Message class: SR - RFC utilities

• Message number: 027

• Message text: Connection error: Gateway or target system not active

What causes this issue?

Unable to establish a connection to the target system.

System Response

The system continues to attempt to establish the connection. You can
see the number of remaining attempts from the list.

How to fix this error?

Check that the specified destination represents a valid connection (by
double-clicking on the destination). Ask your system administrator to
check that the gateway is OK. Sometimes, the gateway needs to be
restarted (using the process gwrd).

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SR027 - Connection error: Gateway or target system not active ?

  The SAP error message SR027, which states "Connection error: Gateway or target system not active," typically indicates that there is an issue with the connection between the SAP system and the target system or gateway. This can occur in various scenarios, such as when trying to connect to an external system, a database, or another SAP instance.
  Causes:
  
  Target System Not Running: The target SAP system or the gateway service may not be active or running.
  Network Issues: There may be network connectivity issues preventing access to the target system.
  Incorrect Configuration: The connection parameters (such as hostname, port, or instance number) may be incorrectly configured in the SAP system.
  Firewall Restrictions: Firewalls or security settings may be blocking the connection to the target system.
  Gateway Service Not Started: The SAP Gateway service on the target system may not be started.
  Authorization Issues: The user may not have the necessary authorizations to access the target system.
  
  Solutions:
  
  Check Target System Status: Ensure that the target SAP system or gateway is up and running. You can do this by logging into the target system directly or checking its status through system monitoring tools.
  Verify Connection Parameters: Check the connection settings in the SAP system (e.g., transaction SM59 for RFC connections) to ensure that the hostname, port, and instance number are correct.
  Network Connectivity: Test the network connection between the SAP system and the target system. You can use tools like ping or telnet to check connectivity to the target system's IP address and port.
  Check Gateway Service: If you have access to the target system, ensure that the SAP Gateway service is running. You can check this in transaction SMGW.
  Firewall Settings: Review firewall settings to ensure that they allow traffic between the two systems on the required ports.
  User Authorizations: Ensure that the user account being used to connect has the necessary authorizations to access the target system.
  
  Related Information:
  
  Transaction Codes:
  
  SM59: To manage RFC connections.
  SMGW: To monitor the SAP Gateway.
  SICF: To check and manage HTTP services.
  
  
  Logs and Traces: Check the system logs (SM21) and developer traces (ST22) for any additional error messages that may provide more context.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address specific issues related to this error message.
  
  If the issue persists after checking the above points, it may be beneficial to consult with your SAP Basis team or reach out to SAP support for further assistance.