How To Fix ECATT666 - Error during HTTP communication to & - &2

SAP Error Message - Details

• Message type: E = Error

• Message class: ECATT - eCATT Messages (Middleware and GUI)

• Message number: 666

• Message text: Error during HTTP communication to & - &2

What causes this issue?

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

System Response

How to fix this error?

Possible causes of error:
1. The URL used to start the Web Dynpro application.
i. If the URL begins with 'https':
Check whether the service number, the target host in the HTTP
destination, and the service number in the URL ,, ,,are identical
(for example, 44333).
In the HTTP destination, set SSL to "Active".
ii. If the URL begins with 'http':
Check whether the service number, the target host in the HTTP
destination, and the service number in the URL ,,are identical (for
example, 12345).
In the HTTP destination, set SSL to "Inactive".
2. The Web Dynpro application could not be reached due to HTTP timeout
settings.
i. Go to "Utilities" -> "Settings" and then select the "eCATT" tab.
ii. Select the "Recording/Execution" tab.
iii. Increase the timeout for HTTP connections.
3. If the error still occurs, check the user name and password in the
HTTP destination.

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 ECATT666 - Error during HTTP communication to & - &2 ?

  The SAP error message ECATT666 indicates that there was an issue during HTTP communication, typically when using the eCATT (extended Computer Aided Test Tool) for automated testing. This error can occur for various reasons, and understanding the cause and potential solutions can help resolve the issue.
  Causes of ECATT666 Error
  
  
  Network Issues: There may be network connectivity problems between the SAP system and the target system (e.g., a web service or another SAP system).
  
  
  Incorrect URL: The URL specified in the eCATT script may be incorrect or not reachable.
  
  
  Authentication Issues: The target system may require authentication, and the credentials provided in the eCATT script may be incorrect or missing.
  
  
  Firewall or Proxy Settings: Firewalls or proxy settings may be blocking the HTTP request.
  
  
  Service Unavailability: The target service may be down or not available at the time of the request.
  
  
  Timeouts: The request may be timing out due to slow response times from the target system.
  
  
  Solutions
  
  
  Check Network Connectivity: Ensure that the SAP system can reach the target system. You can use tools like ping or telnet to test connectivity.
  
  
  Verify URL: Double-check the URL used in the eCATT script to ensure it is correct and accessible.
  
  
  Review Authentication: If the target system requires authentication, ensure that the correct credentials are provided in the eCATT script. You may need to update the script to include the necessary authentication headers.
  
  
  Firewall/Proxy Configuration: Check if there are any firewall or proxy settings that might be blocking the HTTP request. You may need to work with your network team to allow traffic.
  
  
  Service Status: Verify that the target service is up and running. You can do this by accessing the service directly through a web browser or using tools like Postman.
  
  
  Increase Timeout Settings: If the request is timing out, consider increasing the timeout settings in the eCATT script.
  
  
  Check eCATT Configuration: Ensure that the eCATT configuration is correct and that all necessary parameters are set properly.
  
  
  Related Information
  
  SAP Notes: Check SAP Notes related to eCATT and HTTP communication for any known issues or patches that may address the problem.
  Logs and Traces: Review the logs and traces in the SAP system for more detailed error messages that can provide additional context.
  Documentation: Refer to the official SAP documentation for eCATT for best practices and troubleshooting tips.
  
  If the issue persists after trying the above solutions, consider reaching out to SAP support for further assistance.