Dear @MichaelHanna, I'm trying to collect data and automate it with IOBroker, InfluxDB and Grafana for my Vitodens 300. The Token creation starts to really annoy me. I'm wasting time as many others here reported as well. I've made several Attempts to create the token and Step 1 seems to actually work, but Step 2 always ends with the message {"error":"invalid-token-request"} . Could you make an argument to the responsible IT Colleagues from Viessmann to either show us developers an easy way to automate Steps 1 and 2 and put that in the docu ( https://documentation.viessmann.com/static/authentication) or to find a way that the currently described way would work. It hinders a lot to have a stupidly low time limit with 20 Seconds, I'm sitting here with a Timer filling in the URI to browser, picking the code, inserting it to the already prepared Curl Call in my editor, then quickly pasting it to my Windows command line. but each and every time it failed so far. It would be less stressful to have the time Limit at least at 60 Seconds. Currently my experience here is frustrating for no reason at all.
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