That's clever with the table flip and all; it gives you a unique way to get just the responses from this. It's great, seriously, that you're using the tools you have to try to make this situation better.

I bet it's frustrating, though, that you can't do more to address the real problems, like lack of (apparent) incentive to keep this stuff up to date. You have to resort to clever sort-of hacks like "put this magic string in your request so someone will read it". A solution which, I might add, sounds a lot like the problems people are talking about when they talk about inscrutability.