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

/SMB/CUSTOMIZING091 - Overview

• 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.

What else can you do?

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You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

/SMB/CUSTOMIZING091 - Details

• 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