I see " Rounding adjustment" in my Xero invoice. What does it mean?

Xero may calculate line item or document totals in ways that are slightly different to other applications, including Bookeo. Neither approach is necessarily incorrect, just slightly different. Xero guidelines say that in this cases a line should be added to the invoice with the rounding. For more information, please see Xero tutorial here: https://developer.xero.com/documentation/api-guides/rounding-in-xero