Tie your reference architecture together with at least three main scenarios (a normal, an error, a special point of variation) A diagram and a detailed paragraph explaining each scenario.
The architecture style chosen here is the microservice architecture pattern. Link attached to reference document. And the domain is an online shopping store(e-commerce)

Use the architecture style and ui diagram provided to guide you answer the scenario questions with the example pattern provided. Expand in detail.
For example.
Normal; user search item, order item, purchase, receive confirmation, transaction successful
Error; a situation where the order is not successful
Special point variation: an unusual occurrence that happened probably due to a defect, breakdown or delay

Reference docs to guide you with the scenarios;

https://microservices.io/patterns/data/database-per-service.html
Database per service (microservices.io)