Repair case compilation tends to fail when the version, the object, or the timing do not line up. Handover material should carry the symptom, the root cause, and the verification result, naming who provided it, who confirmed it, and when. A clean previous batch does not replace an independent check this time on whether unverified guesses have entered the case library. This vehicle import practice Q&A gathers the cross-check method for the adjacent files. The after-sales technical supervisor should record a clear judgment in the repair case record rather than pass on the supplier's account.