SMS delivery notifications

I have created an SMS gateway with a mikrotik and I am using API calls to send smses.
I have a problem where if a number is not totally wrong I don’t get an error while sending it.
Even if a number is short by 1 digit it won’t look failed!

I want to be able to receive a delivery notification if possible.

I receive in the inbox a message when I send something which always has an empty message…

I thought I could use that as I delivery report but I can’t since I am also receiving this message from false non existing destinations as well!

Is there any workaround?

Thank you in advance

+1 !