Thema "Re: Problem with refresh token request" in Getting started programming with the Viessmann API

Problem with refresh token request

martmey238 — Sat, 23 Oct 2021 14:35:02 GMT

Hello,

I'm trying to implement the Viessmann API into my Openhab3 environment.

I read the documentation carefully and all steps until the "refresh token request" worked very well.

My challenge now is that the refresh token call does not work.

This is the call I'm trying:

curl -X POST "https://iam.viessmann.com/idp/v2/token" -H "Content-Type: application/x-www-form-urlencoded" -d "grant_type=refresh_token&client_id=07...&refresh_token=XX_x..."

I always get {"error":"invalid-token-request"} as response, but I can't find the mistake as the call is exactly as described.

Can you help me, please?

Thanks a Lot.

Re: Problem with refresh token request

CustomerCareMichael — Mon, 25 Oct 2021 07:11:47 GMT

Hi @martmey238 ,

The call you are trying should be correct. Please make sure that your client_id and your refresh_token are valid. Maybe it helps to create a new refresh token. If the refresh token is invalid, you get exactly the error you are describing.

https://developer.viessmann.com/en/doc/authentication (Section: Refreshing an access token)

Let me know if this helps.

Best,

Michael

Betreff: Problem with refresh token request

martmey238 — Mon, 25 Oct 2021 09:29:35 GMT

Hello Michael,

I've clicked the wrong button. The topic is unfortunately not resolved.

I've retried the whole procedure and ended again with the same "invalid-token-request" message.

Any idea what I can do, please?

Thanks a Lot.

Martin