I paid my IV bill online and i already paid AOS bill By mail and I've also confirmed from nvc operator that my AOS bill is entered in the system.

Now automated message reponse is giving this message" The package of information and document generated on XXX
sent to agent"(this mesage is not listed in Vj's nvc automated message list)

I can generate cover sheet for IV package from Online payment site( FYI coversheet is different from the cover sheet in JSC) but for AOS i need to generate from idautomation.

what should i do now?

Should i send I-864 and DS-230 all together or should i wait for both letters and dont break the sequence.

please suggest

You can definitely send your DS-230 in now but it's also the weekend. To be sure, wait 'til Monday and talk to a NVC operator to confirm both DS-230 and I-864 have been generated. Then you can put both in separate envelops and send both in one package overnight to save on mailing fee. Go ahead and generate the cover sheet for your AOS. Good luck!

Thanks for your help