Changes to Allocate a phone

removed the required property workflow_started_at from the response with the 200 status

removed the request property workflow_id

added the required property allocated_at to the response with the 200 status

the recording request property default value false was added

added the non-success response with the status 400

added the non-success response with the status 403

added the non-success response with the status 404

added the non-success response with the status 409

added the non-success response with the status 422

added the non-success response with the status 500

added the new optional request property accessibility

added the required property accessibility to the response with the 200 status

endpoint added