I requested A2P SMS and SMS by App Permissions.
My Sandbox Environment is as follows.
-Clinet ID: 69s7v4WXTzCbP6bKHr2CKQ
-Clinet ID: N/A
What is my HV SMS number? How do I get it?
If HV SMS can't use the sandbox, how can I do that test? Or how can I test to meet the graduation requirements of A2P SMS?