573002: The 'From' number isn't assigned to this verified Voice recipient

This error occurs when you place a Voice call from a trial account using a 'From' number that isn't the trial number assigned to the verified recipient you're calling. During a trial, Twilio assigns a trial phone number to each verified recipient, and the assigned number can differ by product and by recipient.

• The 'From' number in the request isn't the trial number assigned to this verified recipient for Voice.
• The request uses a trial number assigned to a different verified recipient or to a different product.

• Check the Twilio Console to find the trial number assigned to this verified recipient for Voice.
• Place the call again using the assigned trial number as the 'From' number.

• Twilio trial accounts
• Twilio trial numbers
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