How To Fix SY564 - RFC service &1 with function module &2 not assigned to a service assembly

SAP Error Message - Details

• Message type: E = Error

• Message class: SY - ABAP/4 system messages

• Message number: 564

• Message text: RFC service &1 with function module &2 not assigned to a service assembly

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 SY564 - RFC service &1 with function module &2 not assigned to a service assembly ?

  The SAP error message SY564 indicates that a specific RFC (Remote Function Call) service is not properly assigned to a service assembly. This can occur in various scenarios, particularly when dealing with remote function calls in SAP systems.
  Cause:
  The error typically arises due to one of the following reasons:
  
  Missing Assignment: The function module specified in the error message is not assigned to any service assembly in the SAP system.
  Configuration Issues: There may be issues in the configuration of the RFC destination or the service assembly itself.
  Transport Issues: If the function module was recently transported from another system, it may not have been properly configured in the target system.
  Authorization Issues: The user executing the RFC call may not have the necessary authorizations to access the function module.
  
  Solution:
  To resolve the SY564 error, you can follow these steps:
  
  
  Check Function Module Assignment:
  
  Go to transaction SE80 (Object Navigator) or SE37 (Function Module).
  Check if the function module mentioned in the error message is assigned to a service assembly.
  If it is not assigned, you will need to assign it to the appropriate service assembly.
  
  
  
  Assign Function Module to Service Assembly:
  
  Use transaction SICF (Maintain Services) to check the service assembly configuration.
  Navigate to the relevant service assembly and ensure that the function module is included in the service definition.
  
  
  
  Check RFC Destination:
  
  Use transaction SM59 to check the configuration of the RFC destination being used.
  Ensure that the destination is correctly configured and points to the right system.
  
  
  
  Transport Issues:
  
  If the function module was recently transported, ensure that all necessary objects and configurations were included in the transport request.
  Check if the transport was successful and that there are no missing objects.
  
  
  
  Authorization Check:
  
  Verify that the user executing the RFC call has the necessary authorizations to access the function module.
  Use transaction SU53 to analyze authorization issues if the user encounters authorization errors.
  
  
  
  System Restart:
  
  In some cases, a system restart or a refresh of the service might be required to apply changes.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to SY564 for any specific patches or updates that may address this issue.
  Documentation: Review SAP documentation on RFC and service assembly configurations for best practices.
  Support: If the issue persists, consider reaching out to SAP support for further assistance.
  
  By following these steps, you should be able to identify and resolve the cause of the SY564 error in your SAP system.