Data Analyst in a Digital Wallet: Reducing Payment Failures
Investigate a sudden rise in peer-to-peer payment failures and recommend a corrective action plan.
Context
You are a Data Analyst at a digital wallet app. Over the past week, user complaints about failed peer-to-peer (P2P) transfers have surged, pushing the overall payment failure rate to an unacceptable level. The Head of Product has called an emergency sync in 20 minutes. You must identify the root cause of the failures and present an actionable fix.
Your Task
Present your findings and proposal in three sections:
- Recommendation
- Impact
- Implementation Plan
Your response will be reviewed directly by the Head of Product.
Available Data
Daily P2P Transaction Performance (Past 7 Days)
| Day | Total Attempts | Successful Transfers | Failed Transfers | Failure Rate |
|---|---|---|---|---|
| Day 1 | 120,000 | 117,600 | 2,400 | 2.0% |
| Day 2 | 122,000 | 119,438 | 2,562 | 2.1% |
| Day 3 | 119,000 | 116,501 | 2,499 | 2.1% |
| Day 4 (App v4.2 rollout) | 125,000 | 118,500 | 6,500 | 5.2% |
| Day 5 | 128,000 | 120,064 | 7,936 | 6.2% |
| Day 6 | 130,000 | 121,550 | 8,450 | 6.5% |
| Day 7 | 131,000 | 122,354 | 8,646 | 6.6% |
Incident Context
On Day 4, the engineering team rolled out App Version 4.2 to 50% of active mobile users, introducing a refreshed checkout interface and biometric authentication prompt. Concurrently, the operations team flagged that Partner Bank Gateway Beta recorded the highest absolute count of failed transactions over the week, leading them to recommend immediately decoupling Gateway Beta.