How to make a /subscriptions graph API call in a multi-geo URL setup? Getting a 404 error when trying to register a webhooks subscription.

We are getting a 404 error when trying to register a webhooks subscription using Graph API on a Sharepoint Online Document Library.

We are working with a multi-geo environment, in which case there are 2 sharepoint URLs under the same tenant (E.g. https://urlind.sharepoint.com and https://urlaus.sharepoint.com).

The subscription API call https://graph.microsoft.com/v1.0/subscriptions takes the following body:

{
  "changeType": "updated",
  "clientState": "client_state",
  "expirationDateTime": "2025-01-22T14:14:20.71Z",
  "latestSupportedTlsVersion": "v1_2",
  "notificationUrl": "https://hosturl/service/webhook/notify",
  "resource": "drives/<driveId>/root"
}

Now, lets say that the drive/document-library exists in a particular geo-URL, in that case when making the /subscriptions call, we are getting a 404 error. It is a multi-geo environment, and the API call fails in all cases where the DL is present anywhere other than the base SharePoint.

We tried with the resource format "drives/<driveId>/root, and that did not work. We have also tried to set the resource in the following format: "sites/urlind.sharepoint.com,<siteId>,<webId>/lists/<listId>" This format also works when the API call is being made for a DL present in base SharePoint, but not for a DL from any another geo-location. In both the above attempts, we are getting the same 404 error: {

"error": {

"code": "ExtensionError", 

"message": "Operation: Create; Exception: [Status Code: NotFound; Reason: Item not found]", 

"innerError": { 

  "date": "2025-01-06T13:21:13", 

  "request-id": "<requestId>", 

  "client-request-id": "<clientRequestId>" 

} 
```  } 

}

Is there any way to make this call Graph API call to a DL present in a different geo-location? What should the resource value be in that case?