"[Xero] 1) You have reached the limit of invoices you can approve" while syncing invoices

Problem Statement

Sync from Chargebee to Xero fails with "[Xero] 1) You have reached the limit of invoices you can approve."

Solution

The error means you have hit the maximum number of invoices Xero allows to be approved (published) on your current Xero plan. This limit is set by Xero based on your subscription. For details, see Xero Central or contact Xero Support. To resolve it, either approve fewer invoices in Xero, upgrade your Xero plan if you need a higher limit, or sync invoices in smaller batches over time.