How To Fix XT101 - RFC communications error with system/destination &1

SAP Error Message - Details

• Message type: E = Error

• Message class: XT - Transport Management System

• Message number: 101

• Message text: RFC communications error with system/destination &1

What causes this issue?

An RFC error occurred in the TMS communications layer.
Target system: <LS>&V2&</>
Function: <LS>&V3&</>
RFC message: <LS>&V4&</>

System Response

The function terminates.

How to fix this error?

Correct the error and execute the command again.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message XT101 - RFC communications error with system/destination &1 ?

  The SAP error message XT101 indicates an RFC (Remote Function Call) communication error with a specified system or destination. This error can occur due to various reasons, and understanding the cause is essential for troubleshooting. Here are some common causes, potential solutions, and related information:
  Causes:
  
  Network Issues: There may be network connectivity problems between the SAP systems.
  Incorrect RFC Destination Configuration: The RFC destination may not be configured correctly in the SAP system.
  Authorization Issues: The user credentials used for the RFC connection may not have the necessary authorizations.
  System Availability: The target system may be down or not reachable.
  Firewall Restrictions: Firewalls may be blocking the communication between the systems.
  SAP Gateway Issues: The SAP Gateway service may not be running or may be misconfigured.
  
  Solutions:
  
  
  Check Network Connectivity:
  
  Use tools like ping or traceroute to verify that the target system is reachable from the source system.
  
  
  
  Verify RFC Destination Configuration:
  
  Go to transaction SM59 in the SAP GUI.
  Check the configuration of the RFC destination (e.g., TCP/IP settings, target host, and service).
  Test the connection using the "Connection Test" button.
  
  
  
  Check User Authorizations:
  
  Ensure that the user ID used for the RFC connection has the necessary authorizations in both the source and target systems.
  
  
  
  Check System Availability:
  
  Verify that the target SAP system is up and running. You can check this by logging into the target system directly.
  
  
  
  Review Firewall Settings:
  
  Ensure that the necessary ports for RFC communication are open on both the source and target systems.
  
  
  
  Check SAP Gateway:
  
  Ensure that the SAP Gateway service is running on the target system. You can check this using transaction SMGW.
  
  
  
  Review Logs:
  
  Check the system logs (transaction SM21) and the developer trace files (transaction ST22) for any additional error messages that may provide more context.
  
  
  
  Related Information:
  
  RFC Types: Understand the different types of RFCs (synchronous, asynchronous, transactional) and how they are configured.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address specific issues related to RFC communication errors.
  Documentation: Review SAP documentation on RFC connections and troubleshooting for more detailed guidance.
  
  By systematically checking these areas, you should be able to identify and resolve the cause of the XT101 RFC communication error.