Wow! Great question!
This tells me that the root problem here is that development was done before analysis. Broken process. Often broken results. And most certainly broken management.
OP is nitpicking semantics while unsupported is identifying something so much larger: an opportunity to avoid OP's conundrum by doing things right in the first place.
Best wishes, unsupported. I hope you get an opportunity to build what was actually needed in the first place (and may deliver results orders of magnitude higher). But somehow I get the feeling you'll end up just giving them work-around landscape and move on. We've all been there.
TRANSLATION: What would need to change in this business to print the warehouse workers' notes on the pdf before it's actually printed. And please don't supply a response that begins with, "Just don't"