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1. Previous Communications: Reference to prior attempts to resolve the issue, including dates and methods of communication

2. Payment History: Include when dealing with partial payments or payment plans

3. Warranty Information: Relevant when the demand involves warranty claims or guaranteed service agreements

4. Legal Authority: Citation of specific laws or contractual clauses, particularly useful when dealing with sophisticated parties

5. Settlement Options: Proposed alternative solutions or payment arrangements, useful when seeking amicable resolution

6. Return Instructions: Specific instructions for return or repair of equipment, if applicable

1. Purchase Documentation: Copies of original purchase orders, invoices, or receipts

2. Equipment Specifications: Detailed technical specifications and condition reports of the equipment

3. Communication Records: Copies of relevant emails, letters, or other correspondence

4. Payment Records: Documentation of any payments made or payment history

5. Warranty Documents: Copies of warranty certificates or service agreements

6. Photographic Evidence: Photos of equipment condition or damage, if relevant