- In the Invoices list, click Cancel in the Actions column for the target invoice.
- Select a Reason Code (1-4) and optionally add a Remark.
- Click Submit Cancellation. On success the invoice row turns red and the status changes to Cancelled.

When cancellation is allowed #
An invoice can only be cancelled if all of the following are true:
- You are a SuperAdmin
- The invoice status is Active
- No receipts have been issued against it (Receipt Status = Pending)
If the invoice has Partial or Full receipt status it cannot be cancelled. In that case, issue a Credit Note (CRE) or Debit Note (DEB) referencing the original invoice instead.