Alexa smart home skill development: Device discovery not working - amazon-web-services

Question

I am currently developing a smart home skill for my blinds, however I am unable to discover device. Is there a way for me to validate my Discovery response message? I'm thinking this is some logical error in the JSON.
I'm using a Lambda function to perform the requests to my API using node-fetch and async/await, thus I have tagged all JS function as async, this could be another potential cause of this issue. I don't get any errors in CloudWatch either.
This is the response my Lambda function is sending:
{
"event": {
"header": {
"namespace": "Alexa.Discovery",
"name": "Discover.Response",
"payloadVersion": "3",
"messageId": "0a58ace0-e6ab-47de-b6af-b600b5ab8a7a"
},
"payload": {
"endpoints": [
{
"endpointId": "com-tobisoft-rollos-1",
"manufacturerName": "tobisoft",
"description": "Office Blinds",
"friendlyName": "Office Blinds",
"displayCategories": [
"INTERIOR_BLIND"
],
"capabilities": [
{
"type": "AlexaInterface",
"interface": "Alexa.RangeController",
"instance": "Blind.Lift",
"version": "3",
"properties": {
"supported": [
{
"name": "rangeValue"
}
],
"proactivelyReported": true,
"retrievable": true
},
"capabilityResources": {
"friendlyNames": [
{
"#type": "asset",
"value": {
"assetId": "Alexa.Setting.Opening"
}
}
]
},
"configuration": {
"supportedRange": {
"minimumValue": 0,
"maximumValue": 100,
"precision": 1
},
"unitOfMeasure": "Alexa.Unit.Percent"
},
"semantics": {
"actionMappings": [
{
"#type": "ActionsToDirective",
"actions": [
"Alexa.Actions.Close"
],
"directive": {
"name": "SetRangeValue",
"payload": {
"rangeValue": 100
}
}
},
{
"#type": "ActionsToDirective",
"actions": [
"Alexa.Actions.Open"
],
"directive": {
"name": "SetRangeValue",
"payload": {
"rangeValue": 1
}
}
},
{
"#type": "ActionsToDirective",
"actions": [
"Alexa.Actions.Lower"
],
"directive": {
"name": "AdjustRangeValue",
"payload": {
"rangeValueDelta": 10,
"rangeValueDeltaDefault": false
}
}
},
{
"#type": "ActionsToDirective",
"actions": [
"Alexa.Actions.Raise"
],
"directive": {
"name": "AdjustRangeValue",
"payload": {
"rangeValueDelta": -10,
"rangeValueDeltaDefault": false
}
}
}
],
"stateMappings": [
{
"#type": "StatesToValue",
"states": [
"Alexa.States.Closed"
],
"value": 100
},
{
"#type": "StatesToRange",
"states": [
"Alexa.States.Open"
],
"range": {
"value": 0
}
}
]
}
},
{
"type": "AlexaInterface",
"interface": "Alexa",
"version": "3"
}
]
}
]
}
}
}
Thanks for any help.

Answer 1

Is there a way for me to validate my Discovery response message?
Yes, you could use the Alexa Smart Home Message JSON Schema. This schema can be used for message validation during skill development, it validates Smart Home skills (except the Video Skills API).
This is the response my Lambda function is sending
I've validated your response following this steps, the result: no errors found, the JSON validates against the schema. So, there's probably another thing going on. I suggest getting in touch with Alexa Developer Contact Us