Calling an API using POST method

[Marian00]

Hello,

I am trying to call an API using POST method but I always get code 500 as response.

If make the exact same call on Postman, it works as intended. Has anyone had any issues like this?

The body of the API call is the following, JSON format:
{

"ApiKey" : "<APIKEY>",
"Destino" : ["%CurrMobile%"],
"Mensagem" : "<Message to be sent>","
CEspeciais" : "false"

}

I've defined the Content type and Accept to "application/json".

If anyone could help I would really appreciate it.

Thanks,

Marian

[rzaneti]

Hi @Marian00 ,

Error messages starting in 500 are related to the server, but sometimes it can be caused for the data provided in the request (which could explain why you can send it through Postman, but not through Power Automate). 

My recommendation: I had a similar issue in the past and I solve it by copying most part of the request headers from Postman into Power Automate, just like you already did for Content-Type. 

Let me know if it works for you or if you need any additional help!

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[Marian00]

Hi rzaneti,

I don't have any custom headers added to the request in postman so all of them are the automatically generated ones:

The "connection" header is not accepted in PA and some of them are calculated when request is sent. "User-Agent" has it's own field under the advanced options.

Thanks,

Marian Miron

[rzaneti]

Hi @Marian00 ,

In your first message, you mentioned that you set the "Accept" header as "application/json". Did you try to set it as */* in PA?

Let me know if it works for you or if you need any additional help!

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If this is the answer for your question, please mark the post as Solved.
If this answer helps you in any way, please give it a like.

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https://www.linkedin.com/in/raphael-haus-zaneti/ 

[Marian00]

Hi @rzaneti  ,

I have just tried setting "Accept" as */* but I still get response 500.

Do you have any more tips you could give me?

Thank you for your help!

[rzaneti]

Hi @Marian00 ,

Is this an API developer by yourself? If yes, could you please share some details about the error logs?

If it's not, I would recommend you to test the requests by a third source, like Insomnia (which is similar to Postman), or via a server developed with any programming language. If you don't know how to setup a server with a programming language or doesn't have access to Insomnia, that are also some other free online tools for that: in a quick search, for instance, I found this one https://resttesttest.com/.

After testing it, please let me know if it worked or not with this third source.