How To Fix XS816 - Message cannot be transferred to node & due to connection error (final)

XS816 - Overview

• Message type: E = Error

• Message class: XS - SAPconnect: All messages

• Message number: 816

• Message text: Message cannot be transferred to node & due to connection error (final)

What causes this issue?

The message was processed correctly in the SAP system. Due to a
technical fault, the connection to the server &V2& could not be
established or was interrupted. The message could not be copied to node
&V1&.
Information from external system (if available)
&V4&&V3&
Procedure for the administrator
Check the connection from the SAP system to node &V1&.

Error message extract from SAP system. Copyright SAP SE.

XS816 - Details

• The SAP error message XS816 indicates that there is a problem with transferring a message to a specific node due to a connection error. This error typically occurs in the context of SAP's messaging system, particularly in distributed environments where different nodes (or systems) need to communicate with each other.
  Causes:
  
  Network Issues: There may be network connectivity problems between the nodes. This could be due to firewalls, routing issues, or network outages.
  Node Unavailability: The target node may be down or not reachable. This could be due to maintenance, crashes, or other operational issues.
  Configuration Errors: Incorrect configuration settings in the SAP system or in the messaging setup can lead to connection errors.
  Resource Limitations: The node may be experiencing resource limitations (e.g., CPU, memory) that prevent it from processing incoming messages.
  Timeouts: If the connection takes too long to establish or respond, it may result in a timeout error.
  
  Solutions:
  
  Check Network Connectivity: Verify that the