SYNTHETIC PRACTICE. Neither version is a usable agreement. Document A: SAMPLE-TERMS, 1 October 2026, old draft. A1. The Supplier will deliver a monthly service report. A2. The Customer will pay undisputed invoices within 30 calendar days after receipt. A3. The Supplier may use subcontractors with the Customer's prior written consent. A4. Either party may end this agreement on 30 calendar days' written notice. Document B: SAMPLE-TERMS, 3 October 2026, new draft. B1. The Supplier will deliver a monthly service report. B2. Either party may end this agreement on 30 calendar days' written notice. B3. The Customer will pay undisputed invoices within 45 calendar days after receipt. B4. The Supplier may use subcontractors after notifying the Customer in writing. B5. The Supplier will provide an annual service review.