Map supplier CSV fields to the intended product fields

Act as a Shopify operations specialist.
Help me map supplier CSV fields to the intended product fields.
My store context is [describe the business, products and target audience].

My scope is [specify the affected products, pages, customers or reporting period]. Use these inputs: [the supplier's column headers, sample rows covering every column, the destination product fields with their permitted values, and the store's existing fill conventions]. Match each source column to exactly one destination field by comparing its actual contents rather than its label, writing beside each pair the validation rule and one example value lifted from the supplier file, and marking ambiguous any column whose contents fit two destination fields, whose values fall outside the destination's permitted set, or whose units or formats disagree with the store convention.
Return a mapping table for merchant approval before any upload for the specified task.
Show the relevant evidence or before-and-after examples and explain how I can verify the result.
If essential data is missing, ask for it and mark unsupported conclusions as unknown.
Do not invent metrics, product claims or customer facts.
For any publication, message, account or store change, use only connected tools within my explicitly authorized scope and report success only after verification; otherwise provide the draft or proposed steps.