If an invoices or receipts in Nexus fails to sync across to Xero, you may be hitting a plan limit set directly by Xero. This article explains why this occurs and how to resolve it.
Symptoms
- An invoice created or receipted in Nexus does not appear in Xero.
- The system log or alert displays the following error: You have reached the limit of invoices you can approve.
Cause
This error originates from Xero, not Nexus. Lower-tier Xero subscription plans (such as Early or Starter plans) impose a strict monthly cap on the total number of invoices you can approve or publish.
When your account reaches this threshold, Xero blocks Nexus from pushing any additional invoices into your accounting file until the limit resets or the account is upgraded.
How to Resolve
- Log in to your Xero account as an Account Owner or administrator.
- Navigate to your Subscription & Billing settings.
- Upgrade your subscription to a tier that accommodates your monthly invoice volume (e.g., Xero Growing, Established, or standard business plans with unlimited invoicing).
- Nexus Will automatically retry to send the invoices and receipts over every our.
If you continue to experience sync issues after upgrading your Xero plan, contact Nexus Support with the relevant Invoice Number.
Updated: 26 July 2026