How To Fix ESH_FL_MSG049 - HTTP code 401 Unauthorized: missing or bad authentication

SAP Error Message - Details

• Message type: E = Error

• Message class: ESH_FL_MSG - File Processing

• Message number: 049

• Message text: HTTP code 401 Unauthorized: missing or bad authentication

What causes this issue?

The HTTP call ended with HTTP error code 401: Unauthorized. The given
user / password combination for the file loader HTTP destination is not
correct.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Please contact your system administrator or check why the HTTP
destination in transaction SM59 does not work properly.

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 ESH_FL_MSG049 - HTTP code 401 Unauthorized: missing or bad authentication ?

  The SAP error message ESH_FL_MSG049, which indicates an HTTP 401 Unauthorized error due to "missing or bad authentication," typically occurs when a user attempts to access a resource or service without proper authentication credentials or when the provided credentials are incorrect. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause:
  
  Missing Credentials: The request to the SAP system does not include the necessary authentication information (e.g., username and password).
  Incorrect Credentials: The credentials provided are incorrect or do not match any user in the SAP system.
  Session Expiration: The user session may have expired, requiring re-authentication.
  Authorization Issues: The user may not have the necessary permissions to access the requested resource.
  Configuration Issues: There may be misconfigurations in the SAP Gateway or the service being accessed.
  
  Solutions:
  
  
  Check Credentials:
  
  Ensure that the username and password being used are correct.
  If using a service account, verify that the account is active and not locked.
  
  
  
  Re-authenticate:
  
  If the session has expired, log out and log back in to refresh the session.
  
  
  
  Review User Permissions:
  
  Check if the user has the necessary roles and authorizations to access the requested resource.
  Consult with your SAP security administrator to ensure proper roles are assigned.
  
  
  
  Check Configuration:
  
  Review the configuration of the SAP Gateway and ensure that the service is correctly set up to accept the authentication method being used (e.g., Basic Authentication, OAuth).
  Ensure that the service endpoint is correctly configured and accessible.
  
  
  
  Use Correct Authentication Method:
  
  If using an API, ensure that the correct authentication method is being used (e.g., Basic Auth, OAuth tokens).
  For OAuth, ensure that the token is valid and has not expired.
  
  
  
  Network Issues:
  
  Ensure that there are no network issues preventing the authentication request from reaching the SAP system.
  
  
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for the specific version of the system you are using for detailed information on authentication methods and error handling.
  SAP Notes: Check SAP Notes for any known issues or patches related to authentication errors.
  Logs and Traces: Review the application logs and traces in the SAP system to gather more information about the error and its context.
  Support: If the issue persists, consider reaching out to SAP support for assistance, providing them with detailed information about the error and the steps taken to troubleshoot.
  
  By following these steps, you should be able to identify and resolve the cause of the ESH_FL_MSG049 error in your SAP environment.