This invention relates to the field of order settlement technology, and in particular to a method and
system for
processing parking fee
arrears order-linked supplementary
payment settlement. The invention proposes the following scheme: when a vehicle enters any linked
parking lot entrance and is identified, the
system retrieves the outstanding
arrears order based on the vehicle identifier and generates a supplementary
payment interaction entry to trigger
payment; after successful payment, a supplementary
payment transaction record is generated, and the order ownership identifier is parsed to determine the original
parking lot with the
arrears, and settlement routing is executed to deposit funds into the original
parking lot's account. To address anomalies such as out-of-order callbacks, duplicate notifications, and missing receipts, an
order status chain and a fund clearing chain are constructed separately. A dual
verification relationship between the order summary and the
receipt summary is established based on a consistency arbitration key, and consistency determination is completed through time window constraints. When the determination fails, the split type is identified, and self-healing processes such as freezing, retrying, rerouting, and
rollback / supplementary generation are triggered to restore the consistency of the two chains before updating the clearing status and enabling linked release.