What this example demonstrates
This is an illustrative engineering design for reviewing documents before recording approved information in a business system. It is not a client case study, a tested production integration or a promise of savings. It shows the questions and controls that a real implementation needs to address.
The example starts with an authorised document upload and ends with an approved record or an exception assigned to a person. Automatic payment and autonomous approval are outside its boundary.
Follow a document through the process
| Stage | Action | Control |
|---|---|---|
| Receive | Accept a supported document from an authorised source. | Check access, file type and size; reject unsuitable files. |
| Identify | Create a processing reference and check for prior receipt. | Use a stable submission key so retries do not create duplicate records. |
| Extract | Propose structured fields from the document. | Preserve the original; treat extracted values as untrusted. |
| Validate | Check required fields, known identifiers and calculated totals. | Send missing or conflicting values to review; do not invent defaults. |
| Review | Show the source alongside proposed fields. | An employee corrects or rejects the draft before approval. |
| Write | Send only the approved record to the destination. | Apply least-privilege access, record the result and reconcile failures. |
Design failure handling before the happy path
If extraction is unavailable, keep the document in an actionable review queue rather than losing it. If the destination times out, a retry should reuse the same processing reference. An ambiguous response needs reconciliation before another write is attempted.
Record processing states and operational errors without placing document contents or personal data in general analytics. Agree retention, access to review screens and deletion procedures with the process owner. Human approval should be a deliberate state transition, not a button that can be bypassed by a retry.
Acceptance checks for a real implementation
- Submitting the same document twice does not create two approved records.
- Missing identifiers or inconsistent totals block automatic posting.
- Only an authorised reviewer can approve or reject the draft.
- A failed destination write remains visible and can be reconciled.
- The team can pause processing and use a documented manual route.
- The process owner can explain who handles alerts and changed business rules.
What would need to be established for your business
The actual design depends on your documents, destination interfaces, data permissions and approval policy. Testing needs representative examples and explicit expected results. The operational handover needs monitoring, ownership and a recovery procedure.
Start with one bounded workflow. An assessment can identify which steps suit rules, where interpretation may help and which actions should remain with your team. Implementation is a separate scope.