Legend

Actors

• User
  Participant who views leaderboards and attempts to claim rewards.

• Coach
  Can view leaderboards and may interact with reward-related features.

• Admin
  Platform administrator who manages the reward catalog and rules.

• System
  Backend services coordinating eligibility checks, reservations, and notifications.

User Actions

View Leaderboard

User opens the leaderboard to see rankings for a challenge.

View Reward Details

Inspect reward information (requirements, stock, cost).

Check Eligibility

System or user verifies whether the user meets reward criteria (rank, points, completion).

Claim Reward

User initiates the reward claim process (may require confirmation).

Reserve Reward

System temporarily reserves the reward item while transaction completes (stock lock).

Confirm Redemption

Finalize the reward claim and inform user how to redeem (pickup/code/delivery instructions).

Notify User

System sends a confirmation via in-app notification and/or email.

Administrator Actions

Manage Reward Catalog

Add, edit or remove rewards, set stock and limits.

Accept / Deny Redemptions

Admin approves manual redemption requests or resolves exceptions.

Monitor Inventory & Rules

Adjust thresholds, reset availability, and handle disputes.

System Actions (automated)

Check Eligibility

Backend calls leaderboard/ranking logic to validate claim prerequisites.

Reserve & Deduct

Reserve item in inventory, deduct user points or quota, and write redemption record.

Send Notifications

Trigger push/email/in-app messages when claim is successful or rejected.

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Notes:

• The user-facing flow is: View → Check Eligibility → Claim → Reservation → Confirmation/Notification.
• Admin controls are required for catalog management and dispute resolution; most steps are automated by the System.