The number you attempted to add as an Outgoing Caller ID to your account already can be used for outgoing calls and messages.
We are always striving to improve our documentation quality,
and your feedback is valuable to us.
How could this documentation serve you better?
We all do sometimes; code is hard. Get help now from our
support team, or lean on
the wisdom of the crowd browsing the
Twilio tag on Stack Overflow.