What factors are causing the sudden increase in failed ACH transfers for Melio Payments's accounts payable automation service?

Introduction

The sudden increase in failed ACH transfers for Melio Payments's accounts payable automation service is a critical issue that requires immediate attention. This problem directly impacts the core functionality of our product and could significantly affect user trust and satisfaction. I'll approach this analysis systematically, focusing on identifying potential root causes, 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 in our system. Has there been any significant update to our ACH processing pipeline in the last 30 days?

Why it matters: Recent changes often correlate with sudden performance shifts. Expected answer: Yes, we updated our ACH processing module last week. Impact on approach: If confirmed, we'd focus on regression testing and rollback considerations.

• Considering user segments, I'm wondering if this issue is widespread or concentrated. Are we seeing this increase across all user types, or is it more prevalent in specific segments?

Why it matters: Helps narrow down potential causes and affected areas. Expected answer: The issue seems more prevalent among small business users. Impact on approach: We'd investigate small business-specific factors and workflows.

• Given the nature of ACH transfers, I'm curious about timing patterns. Is the failure rate consistent throughout the day, or are there specific time windows when it spikes?

Why it matters: Could indicate issues with bank processing times or system load. Expected answer: Failures spike during peak business hours. Impact on approach: We'd examine system capacity and potential bottlenecks during high-traffic periods.

• Thinking about external factors, I'm considering potential changes in the financial ecosystem. Have there been any recent updates to ACH network protocols or bank APIs that we integrate with?

Why it matters: External changes could require adjustments on our end. Expected answer: No major changes reported by our banking partners. Impact on approach: We'd shift focus to internal factors if external changes are ruled out.