Description
Document the architecture of the system, including the top-up process, QR code generation, merchant transactions, and API interactions.

Requirements

• Describe the overall system architecture.
• Document the flow of transactions from client to merchant.
• Explain the API endpoints and their roles.
• Include diagrams for better visualization.

Acceptance Criteria

• The document should clearly explain the system's architecture.
• It should cover all major components and interactions.
• Diagrams should be included where necessary.

Estimate

• 4