Xero Connector by CarryTheOne

This app is the lifeblood of our business' bookkeeping, and it is the only method that can successfully link multiple stores to our one Xero account. Far superior to the shopify/xero integrator, and the technical support we have received over the years is responsive and top notch. Don't hesitate to install and use this, it pays for itself in time saved. The amount of options presented to you in the setup seems vast, but you will learn as time goes on that they are all necessary.