7805c0ee_I___Bulletin_net_Documentation__Meaning
[Code] 403 [Action Required] Check company limits and address book restrictions and that the recipient is either a) a number, or b) a contact or group. Note Prepay users are limited to 100 messages per day and will get a 403 error if you exceed that. Contact Bulletin if you need this limit removed [Meaning] 
Forbidden
S u c c e s s !
B a d R e q u e s t
U n a u t h o r i z e d
F o r b i d d e n
I n t e r n a l E r r o r
Bulletin API Developer Guide - API - Bulletin.net Documentation
Meaning