Update an existing invoice. Supports partial updates - only provided fields will be updated.
This tool works seamlessly with the following services
Financial management: Invoices, Estimates, Transactions, Bank Accounts, Payments, Recurring Invoices. Manage your business finances.
Complete Flowlu API access: All Agile, CRM, Finance, Products, Tasks, Projects, Custom Fields, Time Tracker, Company, and Calendar tools. Full access to all Flowlu capabilities in a single bundle.