In the case that you receive a response_code 190, the pattern you are sending is not whitelisted on your account.
You will also receive a response_code_description "Only registered traffic allowed. Contact us."
Why am I receiving a 190 or 400 Response Code?
In order to ensure the highest level of deliverability and service for all shared short code customers, we require that all patters are registered in advance.
We do make exceptions in certain cases, please reach out to firstname.lastname@example.org if you believe that the patterns of your messages using our Shared Short Code are not predictable.