Preflighting

The Preflight operation takes the two input PDFs and performs preflight validation based on a product's properties. Then, if any correctable errors are found, they can be automatically fixed.

This will usually be the first operation in any print-asset, and its output will be used for other operations, and is the only operation that is of importance to clients because it may contain warnings about the PDF files (e.g., if your system is producing PDFs that are slightly off-spec in size) or reasons why a print-asset failed Preflight.

The resulting report includes a list of errors found, if any.

Note that if preflight validation (or any other sub-step) fails, the rest of processing won't happen, and status will become failure. The report will still be available, so that it may be inspected to see the cause of the failure.