Why has the authorization success rate for Card Not Present transactions dropped by 5% in the last week for Adyen's European merchants?

Introduction

The recent 5% drop in authorization success rate for Card Not Present (CNP) transactions among Adyen's European merchants is a critical issue that demands immediate attention. This decline not only impacts revenue but also affects merchant satisfaction and trust in Adyen's payment processing capabilities. 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)

• Given the sudden drop, I'm wondering about recent system changes. Have there been any updates to Adyen's payment processing infrastructure in the past two weeks?

Why it matters: System changes often correlate with performance shifts. Expected answer: Yes, a minor update was rolled out. Impact on approach: If confirmed, I'd prioritize technical hypotheses.

• Considering the European focus, I'm curious about regulatory changes. Has there been any new payment regulation implemented in Europe recently?

Why it matters: Regulatory changes can significantly impact authorization processes. Expected answer: No major regulatory changes. Impact on approach: If true, I'd focus more on internal factors.

• Looking at the merchant side, I'm thinking about onboarding processes. Has there been a surge in new merchant sign-ups in the past month?

Why it matters: New merchants might face higher decline rates due to unfamiliarity with best practices. Expected answer: Normal growth, no significant surge. Impact on approach: If confirmed, I'd explore merchant education and onboarding improvements.

• Considering potential fraud patterns, have there been any notable changes in fraud attempt rates or patterns in the last week?

Why it matters: Increased fraud attempts could lead to more conservative authorization decisions. Expected answer: Slight increase in sophisticated fraud attempts. Impact on approach: If true, I'd investigate the balance between fraud prevention and authorization success.