HTTP Activity(POST method) not working properly

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Hi @Jeeva_Natarajan

Here are some things you can try to troubleshoot the issue:

  1. Check the request and response: Use the “Log Message” activity to log the request and response for the HTTP POST method, and compare them with the request and response in your Power Automate flow. This can help you identify any differences that may be causing the 504 error.
  2. Check the URL and parameters: Make sure that the URL and parameters of the HTTP POST request are correct and valid. You can also try using a tool like Fiddler or Postman to test the request and see if there are any issues with the URL or parameters.
  3. Check for server errors: The 504 error could be caused by an issue with the server or network infrastructure. You can check the server logs or contact your network administrator to see if there are any known issues that could be causing the error.
  4. Check the headers value: As you mentioned, there could be a problem with the headers value that you are passing. While there is no specific character limit for the headers value, it is possible that the value is too long or contains invalid characters that are causing the error. You can try reducing the length of the value or removing any invalid characters to see if this resolves the issue.

Thanks!!!