AppFolio Common Errors Overview AppFolio's Stack API powers property management integrations for tenant screening, work orders, lease management, and accounting. Each portfolio operates under its own subdomain ( ), meaning a single integration may need to handle multiple base URLs. Errors commonly stem from authentication misconfiguration, incorrect base URLs per portfolio, and business logic violations like duplicate tenant records or conflicting lease dates. Tenant lookup failures (404) are the most frequent issue, typically caused by targeting the wrong portfolio subdomain. This reference…