How To Fix BGRFC090 - Instance &1 cannot be reached; status check not possible

SAP Error Message - Details

• Message type: E = Error

• Message class: BGRFC - qRFC - New Background RFC

• Message number: 090

• Message text: Instance &1 cannot be reached; status check not possible

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 BGRFC090 - Instance &1 cannot be reached; status check not possible ?

  The SAP error message BGRFC090 indicates that the system is unable to reach a specific instance in the Background RFC (BGRFC) environment. This can occur for various reasons, and understanding the cause is essential for troubleshooting and resolving the issue.
  Causes:
  
  Network Issues: There may be network connectivity problems between the SAP system and the instance that is being referenced.
  Instance Down: The target instance may be down or not running, which would prevent any communication.
  Configuration Issues: Incorrect configuration in the RFC destinations or BGRFC settings can lead to this error.
  Load Balancer Issues: If a load balancer is used, it may not be routing requests correctly to the intended instance.
  Firewall Restrictions: Firewalls may be blocking the necessary ports for communication between instances.
  SAP System Configuration: Issues with the SAP system configuration, such as missing or incorrect entries in the instance profile.
  
  Solutions:
  
  Check Instance Status: Verify that the target instance is up and running. You can do this by checking the SAP Management Console (SAP MMC) or using transaction SM51 to see the list of active instances.
  Network Connectivity: Test the network connectivity between the systems using tools like ping or telnet to ensure that the instance can be reached.
  Review RFC Configuration: Check the RFC destination settings in transaction SM59 to ensure they are correctly configured and that the connection type is appropriate.
  Check Load Balancer: If applicable, verify that the load balancer is functioning correctly and routing requests to the right instance.
  Firewall Settings: Ensure that the firewall settings allow traffic on the necessary ports for SAP communication (typically port 3200 for the SAP instance).
  SAP Notes: Look for any relevant SAP Notes that may address known issues or provide patches related to BGRFC.
  System Logs: Review system logs (transaction SM21) and BGRFC logs (transaction SLG1) for any additional error messages or warnings that could provide more context.
  
  Related Information:
  
  BGRFC: Background RFC is a mechanism in SAP that allows asynchronous communication between different SAP systems or instances.
  Transaction Codes:
  
  SM51: To check the status of SAP instances.
  SM59: To manage RFC destinations.
  SLG1: To view application logs, which can provide insights into BGRFC issues.
  SM21: To check system logs for errors and warnings.
  
  
  
  By following these steps, you should be able to identify the cause of the BGRFC090 error and implement a solution to resolve it. If the issue persists, consider reaching out to SAP support for further assistance.