How To Fix /AIF/RFC_TRANSFER018 - Logical system is empty in qRFC selection set &1

SAP Error Message - Details

• Message type: E = Error

• Message class: /AIF/RFC_TRANSFER -

• Message number: 018

• Message text: Logical system is empty in qRFC selection set &1

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?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

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.

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.

Smart SAP Assistant

• What is the cause and solution for SAP error message /AIF/RFC_TRANSFER018 - Logical system is empty in qRFC selection set &1 ?

  The SAP error message /AIF/RFC_TRANSFER018 Logical system is empty in qRFC selection set &1 typically occurs in the context of the Application Interface Framework (AIF) when there is an issue with the logical system configuration in the qRFC (queued Remote Function Call) processing.
  Cause:
  
  Missing Logical System Configuration: The logical system that is supposed to be used in the qRFC selection set is not defined or is empty. This can happen if the logical system is not properly configured in the system settings.
  Incorrect or Incomplete Data: The data being processed may not have the necessary logical system information, leading to this error.
  Transport Issues: If the configuration was recently transported from another system, the logical system might not have been included or set up correctly.
  
  Solution:
  
  
  Check Logical System Configuration:
  
  Go to transaction SPRO and navigate to the relevant configuration for logical systems.
  Ensure that the logical system is defined and correctly configured in the system.
  
  
  
  Review qRFC Settings:
  
  Use transaction SMQ1 (for outbound queues) or SMQ2 (for inbound queues) to check the status of the queues.
  Verify that the selection set referenced in the error message is correctly configured and that it includes a valid logical system.
  
  
  
  Data Validation:
  
  Check the data being processed to ensure that it includes the necessary logical system information.
  If the data is coming from an external source, ensure that the source system is correctly configured to send the logical system information.
  
  
  
  Transport Configuration:
  
  If the issue arose after a transport, check the transport logs to ensure that all necessary objects were transported correctly.
  Reconfigure the logical system if needed.
  
  
  
  Debugging:
  
  If the issue persists, consider debugging the AIF processing to identify where the logical system is being set or expected.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SPRO: Customizing Implementation Guide
  SMQ1 / SMQ2: Monitor qRFC queues
  AIF transactions: Depending on your version, you may have specific transactions for AIF monitoring and configuration.
  
  
  
  Documentation: Refer to SAP Help documentation for AIF and qRFC for more detailed information on configuration and troubleshooting.
  
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance.
  
  
  By following these steps, you should be able to identify and resolve the issue related to the logical system being empty in the qRFC selection set.