When I do a key value extraction on an uploaded batch, it doesn't work and proceeds to the end of the process none the less.
How can I ensure that if my key value extraction doesn't work, that user will be asked to enter the value?
Did you added the VALIDATE_DOCUMENT plugin? That should force the manual review of the key value extraction.
Another thing to check could be the presence of kv extraction rules for each field.
Finally, I would check the workflow, since the KV_PAGE_PROCESS and KEY_VALUE_EXTRACTION may should be loaded and swithed to ON.