Mark-
First, welcome to the forum; I see this isn't your first time up but close to the first.
Second, your question is very relevant to a lot of discussion that has taken place on the forum regarding reviews, SR-3, Review SOW, and AO-20.
So, let me give you summary version of what I think:
1. The review is for the lender's benefit.
2. The review may have a SOW that is totally different from yours.
3. You are not entitled to see the entire review (although I wish everyone would, because it may make things a lot clearer as to what was and wasn't done, and why). In fact, you are not entitled to see it at all (at this stage; if you made a complaint against the reviewer, at some stage, if appropriate, you probably would be able to see it).
4. You should care less who the reviewer is; it shouldn't matter.
5. You do not have to respond to the review. However, if you don't, the lender doesn't have to accept your appraisal (they don't anyway, but will be less inclined to do so with a "no response" if that is what they are asking).
6. Reviewers are like origination appraisers: Some are good, some are mediocre, and some stink. You may have gotten a rotten one; if so, your addressing the review should be relatively easy. On the other hand, there may be a legitimate question that the reviewer has that isn't adequately addressed/or an item that isn't adequately explained in the original report. You didn't make a comment as to your feelings of the validity of the reviewers comments, so I don't know if you feel there are any legitimate questions. Remember: You know what you were writing about in your report, so when you read it you understand what you are trying to say. Not all reports transmit what the writer knows to the reader (who, it should be assumed, doesn't know what you know).
7. The function of the origination appraisal in a mortgage finance transaction is to provide a user with an opinion of value on a property. That opinion is going to be used to make a lending decision. The opinion needs to be communicated in a manner that is credible. The review function is supposed to insure that origination reports are credible; as a rule, this means that their values are reasonable.
If any piece in this chain is weak (poorly written or supported origination appraisal, poorly trained underwriters, poorly trained reviewer), the system stops the process.
So, your appraisal has been flagged because something is wrong or questioned. That question or "wrongness" can be your appraisal, the UW process, or the reviewer.
If it were me, and it wasn't my appraisal that caused the system to stop, I'd want to point that out as best I could. If there was some deficiency in my report, I'd want to correct it. If I felt it was the review that was wrong, based on USPAP compliance, I'd file a complaint. However I'd want to be very sure of the validity of my complaint if it is USPAP related; It would be professionally embarrassing as well as calling my USPAP competency into question if I lodged a USPAP complaint that had no basis. Your posting here suggests to me you want to be sure, too!
My 2-cents. Good luck.
To everyone else reading this thread and not directly related to Mark's specific issue: In general, are we not seeing more "review" posts now? Does it not seem that more and more reports are going to review? Sounds like I've heard this prediction (now, perhaps no longer a prediction but an observation) before?