Symptom
SMS (text messages) sent from your Aircall number to a Toll-Free number produce an error message that says, An error occurred, please try again shortly.
Cause
At the moment, outbound messaging to toll-free numbers is not supported.
Solution
If you are attempting to unsubscribe from a text message campaign and the sender's phone number is a toll-free number, please contact the sender via an alternative method to unsubscribe.