In WHMCS, you can change the status of an invoice to reflect its current state. Here are the steps to change the status of an invoice:

1. Log into WHMCS: Access your WHMCS admin panel using your username and password.

2. Navigate to Invoices: Click on the "Billing" tab in the top navigation menu, then select "Invoices."

3. Find the Invoice: Locate the invoice you want to change the status of. You can use the search and filter options to narrow down the list of invoices.

4. View the Invoice: Click on the invoice number to open and view the details of the invoice.

5. Change Invoice Status: In the invoice details view, you will see an option to change the invoice status. Typically, you will see options such as "Unpaid," "Paid," "Cancelled," "Refunded," and others, depending on the current status of the invoice and your configured invoice workflow.

6. Select a New Status: Click on the dropdown menu next to the invoice status and select the new status that you want to assign to the invoice.

   • Unpaid: Use this status for invoices that are not yet paid.
   • Paid: Use this status for invoices that have been paid.
   • Cancelled: Use this status if you want to cancel the invoice.
   • Refunded: Use this status if you want to mark the invoice as refunded.
   • Other custom statuses: Depending on your WHMCS configuration, you may have custom statuses defined.

7. Save Changes: After selecting the new status, click the "Save Changes" or "Update" button to apply the change.

8. Confirmation: You will typically receive a confirmation message indicating that the invoice status has been updated successfully.

The invoice status change is now reflected in your WHMCS system. Please note that some actions, such as marking an invoice as "Paid," may require additional information, such as payment details, to be entered before you can save the changes. Make sure to provide accurate information when updating invoice statuses to maintain accurate financial records.

In WHMCS, you can change the status of an invoice manually. Follow these steps to do so:

1. Log into WHMCS: Access your WHMCS admin panel using your username and password.

2. Navigate to Invoices: Click on the "Billing" tab in the top navigation menu, then select "Invoices."

3. View Invoice Details: Find the invoice you want to modify and click on the invoice number or the "View" button.

4. Change Invoice Status:

   • Unpaid: If the invoice is currently marked as paid and you want to change it back to unpaid, click the "Unpaid" button.

   • Paid: If the invoice is unpaid and you want to mark it as paid, click the "Mark Paid" button. You'll need to manually record the payment information.

   • Cancelled: If you want to cancel the invoice, click the "Cancel" button. This will mark the invoice as cancelled and it will no longer be considered for payment.

   • Refunded: If you want to refund the invoice, click the "Refund" button. This will initiate the refund process.

5. Save Changes: After making the necessary changes, click the "Save Changes" button to update the invoice status.

Please note that changing an invoice's status manually may have accounting and reporting implications, so be sure to consider the impact on your financial records. It's recommended to keep accurate records of any manual changes made to invoice statuses for auditing purposes.

Always communicate any changes in invoice status to your clients to avoid any confusion or disputes regarding payments.