1. Special Instructions: Used when specific payment procedures or restrictions need to be detailed

2. Revocation Clause: Include when there's a need to specify conditions under which the authorization can be revoked

3. Emergency Contact Information: Added when alternate contacts need to be available for verification or emergencies

4. Digital Authentication Methods: Include when the authorization will be used for online or digital payment systems

5. Language Declaration: Required when the letter needs to be valid in multiple languages or jurisdictions

1. Copy of Identification Documents: Certified copies of ID documents for both authorizer and authorized party

2. List of Authorized Accounts: Detailed list of bank accounts covered by the authorization

3. Payment Limits Schedule: If applicable, a detailed breakdown of payment limits by transaction type or period

4. Specimen Signature Card: Official signature samples for verification purposes