I have some problems using twilio to test some sms sending from a twilio number to my phyical phone.
I have purchased a US number (+1) and trying to send to a Greek number (+30). The 'To' number is added as a verified caller id.
I get this error
Message cannot be sent with the current combination of 'To' (+3069XXXXXXXX) and/or 'From' (+1219327XXXX) parameters
Also there are now Greek numbers to buy if this was the issue.
I know that in other implementations we were using again US numbers as senders.
Any ideas? Thank you in advance!
I had exactly the same issue. The key was using an alphanumeric sender id.
I was using a messaging service and I fixed the problem by adding one of them.