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# Configure Invoice API Generator

> Zuora's Invoice API Generator enables you to generate invoices of historical versions in bulk. You can use the Subscription API Loader to load the desired subscriptions, then use Invoice API Generator to generate invoices and update the invoices to "Posted".

Zuora's Invoice API Generator enables you to generate invoices of historical versions in bulk. You can use the Subscription API Loader to load the desired subscriptions, then use Invoice API Generator to generate invoices and update the invoices to "Posted".

## Known Limitation

If the Invoice Settlement feature is enabled in your tenant, Invoice API Generator does not work when credit memos need to be generated.