Hello I am Steve Pine. I am a Quickbook Support executive and a freelancer . If you face any issues please contact us. QuickBooks Onesaas integration is a cloud-based solution that connects QuickBooks accounting software with other business applications through Onesass's integration platform. It allows businesses to automate the transfer of data such as invoices, payments, and customer information between QuickBooks and other systems such as e-commerce platforms, point-of-sale systems, and CRMs.