WHMCS 9.0.1 – Unpaid Invoice Editing Restriction & Cancel Permission Requiring Delete Permission

[Ebin V Thomas]

Hello Everyone,

We are currently using WHMCS version 9.0.1 and after upgrading, we have noticed two issues related to invoice management and staff permissions. We would appreciate clarification from the community.

1. Unpaid Invoice Cannot Be Edited

When trying to modify an unpaid invoice, the system shows:

"This is an Unpaid Invoice. You cannot modify an Invoice that is Unpaid."

Previously, we were able to edit unpaid invoices in cases of pricing corrections, tax adjustments, or client-requested changes. We are unable to find any setting that allows editing unpaid invoices in version 9.0.1.

Is this now the intended behavior?
Is there any supported method to allow editing unpaid invoices without marking them as paid first?

 

2. Cancel Invoice Permission Requires Delete Permission

We assign the "Cancel Invoice" permission to specific employees so they can cancel invoices when there are billing errors or mismatches. The cancel action keeps proper logs and maintains an audit trail, which is important for internal control.

However, it appears that the Cancel Invoice permission now requires the Delete Invoice permission to function. This forces us to grant both Cancel and Delete permissions.

This creates a concern because if Delete permission is given, staff may delete invoices instead of cancelling them. Deleted invoices do not provide the same level of audit visibility, and it becomes difficult to track what was removed and why.

Our requirement is to allow invoice cancellation with proper logging, but not allow invoice deletion.

Has anyone else faced this in 9.0.1?
Is this expected behavior, or is there a way to separate Cancel and Delete permissions properly?

Looking forward to feedback from the community.

Thanks in advance.