LCL spare-parts synchronization has to rest on a documented basis. Check spare-parts completion, the LCL warehouse, and the vehicle schedule item by item, then have a second reviewer test whether the conclusion reproduces. If the sample shows signs of late spare parts affecting first-batch after-sales, widen the verification scope and record why the extra check was added. When records are managed by VIN, review the vehicle identity verification Q&A at the same time.