Sample approval, inspection, and document control for solar procurement

Treat approval as a release gate

A sample can show appearance, markings, accessories, packaging, or a particular configuration, but it should not be treated as proof that every production unit meets every project requirement. The approval record should say precisely what it covers and what remains subject to factory documents, inspection, or final engineering review.

Plan inspection before goods are ready, not after a booking is fixed. Agree the timing, sample method where applicable, acceptance criteria, who receives the report, and what happens if a material discrepancy is found. The commercial invoice and packing list should then be generated from the final released record, not copied from an early quotation.

• Approved item identifier, photographs where useful, configuration, label, manual, accessories, and packaging version.
• Clear acceptance criteria and a list of items that cannot be confirmed by a physical sample alone.
• Inspection timing, scope, responsible party, report format, and process for handling deviations.
• Controlled final documents: model, quantity, package count, serial or traceability requests, and revision date.
• Written re-approval process for substitution, label change, packaging change, or document revision.

Define what happens when inspection finds a difference

An inspection report is useful only if the parties agreed what counts as an observation, a material discrepancy, and a release condition. Define who receives the report, who may accept a deviation, how corrective action is evidenced, and whether re-inspection is needed. The decision should be recorded before shipment documents are finalised.

Do not use inspection as a substitute for model-specific document review or site suitability. It is one control within a wider release process that includes the approved configuration, product evidence, packing plan, and commercial documentation.