Unable to create call

I am trying to make a call using the Graph API.
if i use a target as follow : calls to a tenant user is working perfect

{
      "identity": {
        "user": {
          "id": "550fae72-d251-43ec-868c-3737xxxxx",
          "tenantId": "72f988bf-86f1-41af-91ab-xxxxx",
          "displayName": "Sample NAme"
        }
      }
    }

but once i try to use a Phone number as target i am having the follwing message
"403: request authorization tenant mismatch "

body sent :

{
      "identity": {
        "phone": {
          "displayName": "+1234xxxxx",
          "id": "+1234xxxxx"
        }
      } 
}

Graph SDK (beta):

Thanks in advance !
Mefteh.

Start with the Graph API call-creation flow and the beta SDK context, comparing the working tenant-user identity with the phone identity payload. Investigate the 403 tenant-mismatch response and whether phone targets require different authorization or tenant conditions. Done means verifying a supported request or documenting the required limitation or configuration.