okay,I kept hearing this on the automate message from the NVC."The NVC has reviewed your packet and found some documents missing............my question is,are they talking about my DS230 here or IV fee bill?thanks much

i have the same experience in my case its the ds230; ( my missing visa photos) what i did while waiting for the rfe notice i email nvc with a simple inquiry whats the rfe message for? so i can project ahead what to prepare and just to be sure my dad also called an nvc operator..*best time to call is when the office open and 15mins before it closes) the email response is appx. 3-5 business days, and the we waited 11-13 business days for the rfe notice to arrive to my attorney --we also verified if they received our IV fee bill and the agent says YES

Based on you timeline, you'll keep hearing this same message until your IV fee bill enters into their system or most likely when they receive your DS 230.
We kept getting this same message till NVC received our DS 230. It's what we can call a false RFE. I would not worry about it but would suggest you to make sure by calling NVC tomorrow and ask them if so far they have all your documentation updated.