Is there a way to add an Order Reference linking to each Invoice Number on my customer statement?

Hello Hazel1,

Welcome to the Community - thank you for your question!

You can create a custom field for order reference, in which you can manually input the reference number on your transactions. This will then show in the customer's invoice and on reports if you turn on a column under customise for the custom field. It will now show on any statements you send to the customer unfortunately.

Thanks,

Talia