twilio 错误“发件人电话号码无效”

Question

I just made an account and tried testing the twilio API via the python helper library. I am getting the error:

twilio.base.exceptions.TwilioRestException: HTTP 400 error: Unable to create record: The From phone number + is not a valid, SMS-capable inbound phone number or short code for your account.

I am using the SMS enabled number purchased via the twilio CLI. I am using the following code:

from twilio.rest import Client

# Your Account SID from twilio.com/console
account_sid = "####################"
# Your Auth Token from twilio.com/console
auth_token  = "###################"

client = Client(account_sid, auth_token)

message = client.messages.create(
    to="+1xxxxxxxx",
    from_="+1xxxxxxxx",
    body="Test message")

print(message.sid)

Answer 1

turned out the step by step guide on Twilio site is not accurate (sufficient). One first needs to create a messaging service via the dashboard and bind the phone number to it