1. Outstanding Payments: Include when there are any pending payments or financial matters to be settled

2. Return of Materials: Include when there are any materials, equipment, or documents that need to be returned

3. Transition Arrangements: Include when specific arrangements are needed for smooth transition of services

4. Without Prejudice: Include when preserving rights for potential future claims or disputes

5. Confirmation Request: Include when written confirmation of receipt is required

6. Reason for Cancellation: Include when required by contract or when cancelling for cause

1. Copy of Original Contract: Attach a copy of the service contract being cancelled for reference

2. Power of Attorney: If the letter is signed by a representative, include authorization documentation

3. Proof of Breach: If cancellation is due to breach of contract, include supporting evidence

4. Payment Records: If relevant to the cancellation, attach documentation of payment history or outstanding amounts