What a quality control inspection records
A quality control inspection records a pass or fail result — often with notes, photos, or a checklist against specific criteria — for a specific batch, lot, or serial number, at the point it enters inventory (incoming inspection at receiving) or right after it is produced (in-process or final inspection). The key detail is that the result attaches to a specific, identifiable group or unit of stock, not a general note that floats disconnected from which units it actually describes.
Why traceability to batch or serial matters
An inspection result is only actionable if it is tied to something specific enough to act on. "Some units of this product have a defect" tells you almost nothing useful. "Batch #4471 failed inspection for a torque-spec issue" tells you exactly which units to pull, whether any already shipped, and which supplier or production run to investigate.
That level of traceability depends entirely on the inspection being connected to the same batch or serial number tracking used elsewhere in inventory — an inspection system that lives disconnected from lot tracking can flag a problem but cannot point at exactly which stock it applies to.
Blocking failed stock automatically
A batch or lot that fails inspection should be automatically blocked from being picked for an order or shipped, rather than relying on staff remembering which lot numbers are on a "do not ship" list from memory. Enforcing that block at the system level — not just documenting the failure and hoping everyone reads the note — is what actually prevents a known defect from reaching a customer.
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