Why has the authorization success rate for Visa cards dropped by 5% in the last week for Checkout.com's Payment Links product?

Introduction

The recent 5% drop in Visa card authorization success rate for Checkout.com's Payment Links product is a critical issue that demands immediate attention. This decline not only impacts revenue but also affects user trust and satisfaction. I'll approach this problem 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 this could be related to recent changes. Have there been any updates to the Payment Links product or related systems in the past two weeks?

Why it matters: Recent changes often correlate with performance shifts. Expected answer: Yes, there was a minor update to the payment processing system. Impact on approach: If confirmed, I'd focus on that update as a primary area of investigation.

• Considering the specificity of the issue, I'm wondering about the scope. Is this drop consistent across all regions and user segments, or is it concentrated in specific areas?

Why it matters: Localized issues may point to different root causes than global ones. Expected answer: The drop is more pronounced in certain regions. Impact on approach: I'd prioritize investigating region-specific factors if this is the case.

• Given the nature of authorization rates, I'm curious about the baseline. What has been the typical fluctuation in authorization success rates over the past few months?

Why it matters: Understanding normal variance helps determine if this is an anomaly or part of a trend. Expected answer: Typical fluctuations are within 1-2%. Impact on approach: A 5% drop being significantly outside the norm would reinforce the urgency of the investigation.

• Thinking about potential external factors, has there been any communication from Visa about changes on their end that might affect authorization rates?

Why it matters: External partner changes can significantly impact our metrics. Expected answer: No recent communications from Visa. Impact on approach: If there were changes, I'd include Visa-specific factors in my analysis; if not, I'd focus more on internal factors.