How to Specify a Raw Body on a Flow Custom Connector instead of JSON?

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Posted on by ErickDiaz

156

Hi,

I’m creating a Flow process that uses a custom connector to access an on-prem API using the data gateway. I’m on the first step process to get the access token, the POST method expects a raw body as follow:

grant_type=password&username=myusername123&password=mypassword123&scope=api

Unfortunately, the custom connector only allows me to define the body in a JSON format so my connector is failing because of the body:

{
"grant_type" : "password",
"username" : "myusername123",
"password" : "mypassword123",
"scope" : "api"
}

When testing the custom connector, there is an option that let’s me specify a raw body and the test is successful.

Custom Connector - JSON Body Failed 400:

Custom Connector - Raw Body Succeeded 200:

However, when I create my flow, I do not have the option to pass the body as raw:

Any idea how to pass a raw body to my custom connector?

Thank you,

Erick

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Process Advisor

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Answers (1)

Jpan7185 2 on at

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How to Specify a Raw Body on a Flow Custom Connector instead of JSON?

Hi Eric,

This might be a late of a response. The easiest way is to set your raw body inside on a variable. Be sure that there are no spaces saparating any of the values:

Then use the variable as the body of the http request

and voila...

Hope this helps
Verified answer

ErickDiaz 156 on at

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Re: How to Specify a Raw Body on a Flow Custom Connector instead of JSON?

I found a very simple fix, I just had to specify an empty string with double quotes (i.e. "") as the Body and that prevented Power Apps from converting my parameter (grant_type=password&username=myusername123&password=mypassword123&scope=api) to JSON.