How To Fix XS856 - No delivery to &1, authentication required

SAP Error Message - Details

• Message type: E = Error

• Message class: XS - SAPconnect: All messages

• Message number: 856

• Message text: No delivery to &1, authentication required

What causes this issue?

The message was processed successfully in the SAP system. The mail
server that is to receive the message for further processing requires
authentication. Probably there is no logon data specified in the
SAPconnect configuration.
Information from external system (if available)
&V2&
&V4&&V3&

How to fix this error?

Enter the logon data in the SAPconnect node.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message XS856 - No delivery to &1, authentication required ?

  The SAP error message XS856 "No delivery to &1, authentication required" typically indicates that there is an issue with the authentication process when trying to deliver a message or data to a specified endpoint (denoted by &1). This error can occur in various contexts, such as when using SAP Cloud Platform or when working with SAP HANA XS (Extended Services).
  Cause:
  
  Authentication Issues: The most common cause of this error is that the system is trying to send data to a destination that requires authentication, but the necessary credentials are not provided or are incorrect.
  Configuration Errors: There may be misconfigurations in the destination settings, such as missing or incorrect authentication parameters.
  Network Issues: Sometimes, network-related issues can prevent proper authentication from occurring.
  Expired Credentials: If the credentials used for authentication have expired, this error may also occur.
  
  Solution:
  
  
  Check Destination Configuration:
  
  Go to the SAP Cloud Platform cockpit or the relevant configuration area in your SAP system.
  Verify the destination settings for the endpoint you are trying to reach. Ensure that the authentication method (Basic Authentication, OAuth, etc.) is correctly configured.
  Make sure that the username and password (or other credentials) are correct and have not expired.
  
  
  
  Update Credentials:
  
  If the credentials are expired or incorrect, update them with valid information.
  
  
  
  Test Connectivity:
  
  Use the "Test" feature in the destination configuration to check if the connection can be established successfully. This can help identify if the issue is with the destination or the authentication.
  
  
  
  Check Network Settings:
  
  Ensure that there are no firewall or network issues preventing access to the endpoint.
  
  
  
  Review Logs:
  
  Check the logs for more detailed error messages that might provide additional context about the authentication failure.
  
  
  
  Consult Documentation:
  
  Refer to the official SAP documentation for the specific service or component you are working with to ensure that you are following the correct procedures for authentication.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  Community Forums: SAP Community forums can be a valuable resource for finding solutions to similar issues encountered by other users.
  Support: If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance.
  
  By following these steps, you should be able to diagnose and resolve the XS856 error related to authentication issues in your SAP environment.