Need To Implement API


#1

Our Website Need a API Intregation but we are getting Unexpected error codes

{
  "code": 21211,
  "message": "The 'To' number 5551234567 is not a valid phone number.",
  "more_info": "https://www.atozunblockedgames.com/this-is-the-only-level/",
  "status": 400
}

Can Any One Sort us Out