Purchase Order Imports — Header Contract Check

Choose this endpoint when you need a fast, low-cost ($0.01 USDC) structural validation of purchase order CSV files specifically, particularly when checking that column headers match the expected contract (purchase_id, placed_on, vendor_id, ordered_units, order_amount) and that data values conform to allowed categories and numeric ranges. Prefer this over generic CSV validators when the domain is purchase order imports and you need a specialised preset with no external enrichment or side effects.

• CSV exceeds 1000 rows — only up to 1000 rows are validated
• CSV string is empty or missing — minimum length of 1 character required
• Cell content exceeds max_cell_length — flagged as a contract violation
• Delimiter mismatch causes parsing errors if actual delimiter differs from declared one
• Numeric values outside declared minimum/maximum bounds are flagged
• Category values not in allowed_categories list trigger contract violations
• Malformed CSV that cannot be parsed returns an error report