The label covers more than one product category
Buyers often compare OCR tools, extraction APIs, document workflow systems, and review products under the same 'document processing' label. That creates confusion early in the buying cycle because the products are optimized for different users and different next steps.
The useful test is still a live workflow
The simplest way to compare platforms is to run one real workflow end to end. Can the reviewer find what matters, verify the answer, and move the output into the next system without unnecessary rework? That tells you more than a polished demo ever will.
The source document should stay close to the output
Processing becomes much more useful when the extracted result, answer, or issue is still tied to the source. That is what lets teams work faster without giving up the ability to check what the system did.