You wrote the "404" results prevents your application from "graduating" but the API url you posted is the url for production environment (https://platform.ringcentral.com/restapi/v1.0/account/~/extension/803791067)

Using the .Net SDK on sandbox environment, you need to set the correct platform when creating the SDK instance. I.e 'https://platform.**devtest**.ringcentral.com'

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@Phong Vu
Thanks. Yes, you can disregard my comments about "graduating". Because I was getting the "404" errors, it did (past tense) stop us graduating. So I remove the "fetching images" bit from our code. As a result the application then passed (graduated) and hence I then went on to documente the problem on the production environment.

The problem is still happening. I can't seem to get the images using the SDK, on the Sandbox or on Production. Does "404" signify that the user supposedly has no picture? If so, it's a shame that it returns an error ("404") and not something nicer, like a "204 No Content".

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Hi @Phong Vu

Thanks again. I have added the new traces below.

I'm not really sure about your second comment. Could this be why the problem is now happening? The same code used to work when it was written.

I created and registered the app using the first (trial) account. But then as you say, I have got a new, different production account. I thought I would carry on using the first account as just like a "developer" account, that I only accessed to edit/publish the app. And I'd use my new account for real calls, etc. Is that now how it works? Should I move/recreate the app under my new account?

Regards
Alex

==
Traces:

GET https://platform.ringcentral.com/restapi/v1.0/account/~/extension/~ HTTP/1.1
X-User-Agent: Unknown/0.0.1 RingCentral.Net/5.2.0
Authorization: Bearer [redacted]
Host: platform.ringcentral.com
--
HTTP/1.1 200 OK
Server: nginx
Date: Tue, 03 May 2022 17:37:01 GMT
Content-Type: application/json;charset=utf-8
Content-Length: 6601
Connection: keep-alive
RCRequestId: a3ce4e7e-cb07-11ec-b618-005056b5c469
RoutingKey: ZRH01P32PAS03
Content-Language: en-GB
Vary: Accept-Encoding, User-Agent
X-Rate-Limit-Group: light
X-Rate-Limit-Limit: 50
X-Rate-Limit-Remaining: 48
X-Rate-Limit-Window: 60

{
"uri" : "https://platform.ringcentral.com/restapi/v1.0/account/574962067/extension/1005430067",
"id" : 1005430067,
"extensionNumber" : "323",
[redacted]
"profileImage" : {
"uri" : "https://platform.ringcentral.com/restapi/v1.0/account/574962067/extension/1005430067/profile-image"
},
"account" : {
"uri" : "https://platform.ringcentral.com/restapi/v1.0/account/574962067",
"id" : "574962067"
},
"hidden" : false
}
==
GET https://platform.ringcentral.com/restapi/v1.0/account/~/extension/~/profile-image HTTP/1.1
X-User-Agent: Unknown/0.0.1 RingCentral.Net/5.2.0
Authorization: Bearer [Redacted]
Host: platform.ringcentral.com
-
HTTP/1.1 404 Not Found
Server: nginx
Date: Tue, 03 May 2022 17:37:01 GMT
Content-Type: application/json;charset=utf-8
Content-Length: 289
Connection: keep-alive
RCRequestId: a3d88574-cb07-11ec-b618-005056b5c469
RoutingKey: ZRH01P32PAS03
Content-Language: en-GB
X-Rate-Limit-Group: medium
X-Rate-Limit-Limit: 40
X-Rate-Limit-Remaining: 38
X-Rate-Limit-Window: 60

{
"errorCode" : "CMN-102",
"message" : "Resource for parameter [extensionId] is not found",
"errors" : [ {
"errorCode" : "CMN-102",
"message" : "Resource for parameter [extensionId] is not found",
"parameterName" : "extensionId"
} ],
"parameterName" : "extensionId"
}
==
GET https://platform.ringcentral.com/restapi/v1.0/account/574962067/extension/1005430067/profile-image HTTP/1.1
X-User-Agent: Unknown/0.0.1 RingCentral.Net/5.2.0
Authorization: Bearer [Redacted]
Host: platform.ringcentral.com
-
HTTP/1.1 404 Not Found
Server: nginx
Date: Tue, 03 May 2022 17:40:09 GMT
Content-Type: application/json;charset=utf-8
Content-Length: 289
Connection: keep-alive
RCRequestId: 1399ae6a-cb08-11ec-b905-005056b58c8b
RoutingKey: ZRH01P32PAS01
Content-Language: en-GB
X-Rate-Limit-Group: medium
X-Rate-Limit-Limit: 40
X-Rate-Limit-Remaining: 37
X-Rate-Limit-Window: 60

{
"errorCode" : "CMN-102",
"message" : "Resource for parameter [extensionId] is not found",
"errors" : [ {
"errorCode" : "CMN-102",
"message" : "Resource for parameter [extensionId] is not found",
"parameterName" : "extensionId"
} ],
"parameterName" : "extensionId"
}

---