How To Fix /SMB/CUSTOMIZING091 - RFC error destination &1: &2 - target system &3. Contact your sys admin

SAP Error Message - Details

• Message type: E = Error

• Message class: /SMB/CUSTOMIZING -

• Message number: 091

• Message text: RFC error destination &1: &2 - target system &3. Contact your sys admin

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SMB/CUSTOMIZING091 - RFC error destination &1: &2 - target system &3. Contact your sys admin ?

  The SAP error message /SMB/CUSTOMIZING091 indicates an issue with the Remote Function Call (RFC) destination in the SAP system. This error typically arises when there is a problem with the configuration of the RFC destination or when the target system is not reachable. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause
  
  
  RFC Destination Configuration: The RFC destination may not be correctly configured in the SAP system. This could include incorrect connection parameters, such as the target system's hostname, system number, or client number.
  
  
  Network Issues: There may be network connectivity issues preventing the SAP system from reaching the target system. This could be due to firewall settings, network outages, or incorrect routing.
  
  
  Target System Down: The target system may be down or not running, which would prevent any RFC calls from being successful.
  
  
  Authorization Issues: The user credentials used for the RFC connection may not have the necessary authorizations to access the target system.
  
  
  SAP Gateway Issues: The SAP Gateway service may not be running on the target system, or there may be issues with the gateway configuration.
  
  
  Solutions
  
  
  Check RFC Destination Configuration:
  
  Go to transaction SM59 in the SAP GUI.
  Locate the RFC destination mentioned in the error message.
  Verify the connection parameters (e.g., target host, system number, client, user, and password).
  Test the connection using the "Connection Test" button.
  
  
  
  Network Connectivity:
  
  Ensure that the network connection between the SAP system and the target system is active.
  Use tools like ping or telnet to check connectivity to the target system's hostname and port.
  
  
  
  Check Target System Status:
  
  Verify that the target system is up and running.
  Check the system logs for any errors that might indicate why the system is not reachable.
  
  
  
  Review User Authorizations:
  
  Ensure that the user credentials used for the RFC connection have the necessary authorizations in the target system.
  Check the user roles and profiles to confirm that they allow for RFC access.
  
  
  
  SAP Gateway Configuration:
  
  Check if the SAP Gateway service is running on the target system.
  Review the gateway logs for any errors that might indicate issues with the service.
  
  
  
  Contact System Administrator:
  
  If the issue persists after checking the above points, it may be necessary to contact your system administrator for further assistance. They can provide deeper insights into system configurations and logs.
  
  
  
  Related Information
  
  
  Transaction Codes:
  
  SM59: Manage RFC Destinations
  SMGW: Monitor SAP Gateway
  SICF: Maintain HTTP Services (if applicable)
  
  
  
  SAP Notes: Check for any relevant SAP Notes that might address specific issues related to RFC connections or the error message in question.
  
  
  Documentation: Review SAP documentation on RFC connections and troubleshooting to gain a better understanding of how to configure and manage RFC destinations.
  
  
  By following these steps, you should be able to identify and resolve the issue causing the /SMB/CUSTOMIZING091 error message.