The PV Letters QuickBooks integration is a single-company internal accounting tool. It is not a publicly available multi-tenant application. Connecting or reconnecting the integration is a one-time administrative action performed by authorized PV Letters personnel against the firm's own QuickBooks Online account.
Only individuals who are (a) authorized administrators of the PV Letters QuickBooks Online company and (b) authorized operators of the internal audit tooling can perform a connection. Third parties, contractors, and other QuickBooks customers cannot connect this integration to their own accounts.
com.intuit.quickbooks.accounting) and grant access.If the integration's refresh token has expired (for example, after 100+ days of inactivity) or has been revoked, the tool will automatically prompt for reconnection on its next run. Follow the same steps above. If the connection has been explicitly disconnected, the tool will require a fresh OAuth flow before any QuickBooks calls can be made.
All connection and authorization traffic uses HTTPS with TLS 1.2 or higher. Refresh tokens and realm IDs are encrypted at rest using AES-256-GCM with keys stored in a separate configuration file from the token itself. OAuth CSRF protection is implemented via cryptographically random state tokens. Sensitive credentials are never written to logs; automated redaction replaces any accidental occurrence with "[REDACTED]" before records are persisted.
For access requests or questions about this integration, contact:
PV Letters PLLC
Email: michael.hart@pvletters.com
Phone: 385-513-9728
To disconnect an existing connection, see the Disconnect page.