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The request hostname is invalid.

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error : Action 'Send HTTP_Request_V2_' failed

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN""http://www.w3.org/TR/html4/strict.dtd">
<HTML><HEAD><TITLE>Bad Request</TITLE>
<META HTTP-EQUIV="Content-Type" Content="text/html; charset=us-ascii"></HEAD>
<BODY><h2>Bad Request - Invalid Hostname</h2>
<hr><p>HTTP Error 400. The request hostname is invalid.</p>
</BODY></HTML>

I know it's a problem with the hostname. Please tell me the solution after that.
Premium connectors are not available.
Should I call the Microsoft Graph API? If so, please let me know how. Azure? I created the app name and client id at
graph.microsoft.com. What should I do next?

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Expiscornovus 33,189 Most Valuable Professional on at

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Hi @ｈｆ,

This specific HTTP 400 not found error is caused by the trailing space/newline character. You have a large white gap a the end of the value in the URI field.

Below is an example how to reproduce the Invalid Hostname error (click on the gif to see it in higher resolution).

However, the Send an HTTP request V2 from the Groups connector also only supports Graph API calls with the groups resources. When you fix the Invalid hostname error you will get another error because of this limitation.

URI path is not a valid Graph endpoint, path is neither absolute nor relative or resource/object is not supported for this connector. Resources: groups.

You are using the teams type of resource. That's why I would suggest to use the HTTP connector action instead.

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ｈｆ 7 on at

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Thank you for your reply!
Thanks to you, I managed to fix the problem.
However, when I made a channel mention, the following error was output. You can expect that the variable in the Body is the cause, but is the URL part bad?
Thank you for your support.

Error：Unable to read JSON request payload. Please ensure Content-Type header is set and payload is of valid JSON format.

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Expiscornovus 33,189 Most Valuable Professional on at

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Hi @ｈｆ,

That could be caused by the " characters for the the title and href attributes of your <a> HTML tag.

Have you tried escaping those quotes by using backslashes?

<a title=\"Test Title\" href=\"https://teams.microsoft.com\">Label</a>

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