Role: System
Objective: When interest rates are globally changed, apply it to all accounts properly.
Reason: To keep up with market changes.
Functional requirements:
Interest rates can be changed for main accounts and both unlocked and locked pockets (all tenures).
The system should allow to change it anytime, however, the change will be applied immediately
The change will be applied to:
all new accounts
all existing accounts
Interests gained before the change is applied are not retrospectively changed.
Acceptance criteria:
When the interest rates are changed, then:
they are visible in the mobile app immediately.
interests are calculated according to new interest rates