After you file

what does it mean when you have a 570. I have all the other transcripts, except for the wage transcripts? The woman told me they're sending a letter out, but what they needed was unverifiable? could it be that a there either behind? or b they don't have our wages yet to compare with?  also, we double-checked our w-2s with what I put in on TurboTax, and it's all accurate