What's causing the sudden increase in failed transactions on TMRW's mobile app payment feature?

Introduction

The sudden increase in failed transactions on TMRW's mobile app payment feature is a critical issue that demands immediate attention. This problem directly impacts user experience, revenue, and trust in our platform. I'll approach this analysis systematically, focusing on identifying the root cause, validating hypotheses, and developing both short-term fixes and long-term solutions.

Step 1

Clarifying Questions (3 minutes)

• Looking at the timing, I'm thinking there might be a recent change that triggered this. Has there been any recent update to the app or backend systems?

Why it matters: Recent changes often correlate with performance issues. Expected answer: Yes, a recent update was deployed. Impact on approach: If yes, we'll focus on the changes made in that update.

• Considering user segments, I'm wondering if this is affecting all users equally. Are we seeing the issue across all user segments or is it concentrated in specific groups?

Why it matters: Helps narrow down potential causes and affected areas. Expected answer: The issue is more prevalent among Android users. Impact on approach: If segmented, we'll investigate platform-specific issues.

• Thinking about transaction types, I'm curious if this is happening for all payment types. Is the increase in failed transactions consistent across different payment methods (credit cards, debit cards, digital wallets)?

Why it matters: Different payment methods involve different processing systems. Expected answer: The issue is primarily affecting credit card transactions. Impact on approach: If specific to certain payment types, we'll focus on those systems.

• Considering external factors, I'm wondering about any recent changes in our payment processing partnerships. Have there been any changes in our relationships with payment processors or banks?

Why it matters: External partner changes can significantly impact payment processing. Expected answer: No recent changes in partnerships. Impact on approach: If no changes, we'll focus more on internal factors.