Can I check for customer invoices raised twice?

Open this screen in Saral/accounts/duplicate-invoices

Yes — Duplicate Invoices has a sales invoices side: the same check catches a customer invoiced twice before they are chased twice. The fix is a credit or refund to the customer in Xero.

Not what you needed? Inside Saral, ask Kuku (Alt+K) — if it cannot answer, “Ask a human” sends the question to Saral support with the chat attached.