Update device app management mobile ios

Question

Attempting to make an http call to update an ios lob app to intune. App registration has the appropriate permissions. When making the call, the error is

{ "_version": 3, "Message": "An error has occurred - Operation ID (for customer support):

 | 00000000-0000-0000-0000-000000000000 - Activity ID: 1e4adc3d-7d39-4541-a477-da56d615205a - Url:

 | https://fef.msua05.manage.microsoft.com/AppLifecycle_2411/StatelessAppMetadataFEService/deviceAppManagement/mobileApps('xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx')?api-version=2024-09-06",   "CustomApiErrorPhrase": "",   "RetryAfter": null,   "ErrorSourceService": "",   "HttpHeaders": "{}" }
```What do this error mean? I've tried using Azure Monitor and looked through IntuneAuditLogs but nothing helpful. Has anyone come across this?

Thanks

Answer 1

Hello Tommy Le,
The graph query is correct but 400 bad request usually happens in case of authorization failures because of insufficient permissions. Since you mentioned you are using app registration, try the following,

1. Create a fresh app registration in Entra
2. Provide delegated and application permissions required for the kind of actions you want to do. For example, the graph call you are working on requires the following permissions, DeviceManagementApps.Read.All
3. Under Authentication – Platform configurations – Add a platform, select Mobile and desktop applications.
4. Select the default URIs and add the below URI

urn:ietf:wg:oauth:2.0:oob

1. In total there would be 4, as per the screenshot below and save the settings.

Now use this app ID and secret to make the graph call. Hope that helps.

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