Hello all, I'm new here and couldn't find any information on how to make IOT API webhooks working. I tried what the doc say here : https://documentation.viessmann.com/webhooks-eventstreamerapi-mw-iot/v1#webhooks-eventstreamerapi-mw-iot_Create_webhook But i got an error message: {"viErrorId":"xxx","statusCode":400,"errorType":"VALIDATION_ERROR","message":"","extendedPayload":{"subscriptions[0].gatewaySerial":"EMPTY"}} So I tried to pass also the gatewaySerial on subscription level and payload level but it didn't help. Anyone has ever managed to make webhooks work ? Thanks !
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