Transactional Text Message SMS Delivery Error (Invalid Phone Number)

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All the AWS cloudwatch related SMS have stopped working in recent weeks. We just noticed it today. The Delivery status log says

delivery.providerResponse Invalid PhoneNumber

The number is a US number with format 1-nnn-nnn-nnnn. This format used to work in the past. Do we need to add a + sign in front? or there is an issue somewhere else?

1 Answer
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Accepted Answer

I think it was number format issue after adding +1 in front, it seems to be working (at least the test message)

HVS
answered 2 months ago

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