[Code] 200 [Action Required] Message Passed API validation, check the HTTP response XML for details if message subsequently fails Note Bulletin Messenger versions earlier than /api/3 returned a 204 response, so be careful if you are upgrading [Meaning] 
Success!
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