Enverium’s checks are warnings. Approval does not require every field to be complete: whatever is open is acknowledged in the manifest and travels with the declaration.
Separation of duties between preparer and approver is a company policy, off by default. When it is off and the same user prepares and approves, the declaration shows its recipients that it was approved by its own preparer.
Enverium does not audit the declared figures. The company is responsible for them, and an independent verification, where one exists, is reported by the company itself.