Problem during IOT Central device enrollment

BERNARD Thomas 166

Hello,

I am facing a problem during the enrollment of my devices in Azure IOT Central application.

I am receiving this error:

{
    "operationId": "5.2d3155516e00d700.08851641-b679-4a10-86f6-3bafd11e88a6",
    "status": "failed",
    "registrationState": {
        "registrationId": "blablabla",
        "createdDateTimeUtc": "2022-01-31T09:34:56.3518591Z",
        "status": "failed",
        "errorCode": 400207,
        "errorMessage": "Custom allocation failed with status code: 400",
        "lastUpdatedDateTimeUtc": "2022-01-31T09:34:56.6662096Z",
        "etag": "IjI4MDA5ZmJjLTAwMDAtMGQwMC0wMDAwLTYxZjdhZDQwMDAwMCI="
    }
}

I do not understand what is the problem, everything was fine last time in another IOT Central application. Why is it not working now ? Something has changed in IOT Central DPS requirements ?

Thanks in advance for the help.

Regards

BERNARD Thomas 166 Reputation points

2022-01-31T10:23:21.75+00:00

Now it is working again, without any modification on my side ...
If you have any information on what was happening, I am interested !
BERNARD Thomas 166 Reputation points

2022-01-31T11:50:04.813+00:00

And now it fails again, with the same error code.

Any idea here ? Maybe I am doing something wrong during the creation of the application on IOT Central ?
BERNARD Thomas 166 Reputation points

2022-01-31T13:01:13.587+00:00
For information:

If I upload templates before the enrollment of device, it fails with the error described below.

If I enroll devices first and then add templates, it works.

Theorically the templates should be retrieved from public space (https://github.com/Azure/iot-plugandplay-models/tree/main/dtmi/com/socomec), but there is a problem with the template socomecgateway-1.json. So I need to upload manually this template in the IOT Central application.

1 answer

Roman Kiss 2,246 Reputation points

2022-01-31T16:49:25.067+00:00

Hi

It looks like, the IoT Central has a problem with a gateway device template (contains a Relationship type) during the provisioning process. When the gateway device template has been loaded into the IoT Central in prior, then everything is working.

Note, that the provisioning a downstream device included its assigning a device template and attaching to the gateway is working well.

Thanks
Roman
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BERNARD Thomas 166 Reputation points

2022-02-01T07:44:33.923+00:00

Thanks for the answer !
Yes, it seems that IOT Central has a problem with the provisioning of gateway devices.

To make it working, I need to follow these steps:

Create a new IOT Central application (i.e. "Custom application")

Get the connection parameters, set the gateway device with them and start the enrollment --> it will fails (I don't know why, but no message is receiving in the MQTT topic)

However, the gateway appears in the device list of the IOT Central application --> delete it and upload manually templates into the application (the same as on the github repository "iot-plugandplay-models")

Restart the enrollment --> all devices will be created without error or timeouts

If I do not follow these steps, the error 400207 occurs.

Is it possible to have a tracking of this issue somewhere ?

Thanks again, have a nice day !

Thomas

BERNARD Thomas 166 Reputation points

2022-02-01T07:47:43.993+00:00

For your information, the issue is reported here: https://github.com/Azure/iot-plugandplay-models/issues/419

Roman Kiss 2,246 Reputation points

2022-02-01T10:58:17.28+00:00

Thanks Thomas for this info, according to the portal for manual uploading a gateway device template, we have to check the option: This is a gateway device.
So, maybe we need to do it something explicitly in the provisioning payload, that the device is a gateway device.

Thanks
Roman
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Problem during IOT Central device enrollment

1 answer