Can't create messaging service for subaccount using main account credentials.

[grimmdude]

Issue Summary

Creating a new messaging service for a subaccount creates the service in the main account when using main account credentials.

Steps to Reproduce

1. Instantiate new Client using main account credentials and passing subaccount sid as third argument.
2. Create messaging service.
3. New messaging service has been created under the main account.

Code Snippet

use Twilio\Rest\Client;
$twilio = new Client(MAIN_ACCOUNT_SID, MAIN_ACCOUNT_TOKEN, SUBACCOUNT_SID);
$messagingService = $twilio->messaging->v1->services->create('New Messaging Service');

// Messaging service account SID reflects main account instead of subaccount.
$messageService->accountSid === MAIN_ACCOUNT_SID

Technical details:

• twilio-php version: 6.27
• php version: 8.0.0

[shwetha-manvinkurke]

@grimmdude The SUBACCOUNT_SID is only used for the v2010 APIs and in order to create the service for your subaccount, you would need to initialize the client with the subaccount accountsid/authtoken.

Internal reference for doc update