How can I edit a customer invoice

[microtronix]

Whats stupid is as a developer this is as simple as adding a checkbox to the config to allow us to choose ourselves. I've never in my life understood why software companies lock you in, instead of giving you the option. You keep increasing prices year after year and you want us to stay with you, but if you keep doing this crap most of your base is not gonna find value in your ever increasing prices.

[Mr. Prateek]

14 hours ago, Juanzo said:

@WHMCS Rex is it true that the only solution now, $allow_adminarea_invoice_mutation = true; in configuration.php, will be removed in future versions?

Yes, it is mentioned on their official website docs. 

They could have easilly added a checkbox settings to enable/disable this but they chose to enforce it so badly.

 

 

[LittleCreek]

21 hours ago, Juanzo said:

@WHMCS Rex is it true that the only solution now, $allow_adminarea_invoice_mutation = true; in configuration.php, will be removed in future versions?

No to the first part of your question. You can manually change the invoice back to Draft in the database. Then you can edit it just fine. 

[Mr. Prateek]

10 hours ago, LittleCreek said:

No to the first part of your question. You can manually change the invoice back to Draft in the database. Then you can edit it just fine. 

It is not wise to edit DB data directly as it might create unknown consequences. There might be dependencies and conditions, for example, if the invoice is in draft state, some other value might have to be x, and it isn't, it might start throwing errors on your WHMCS or cron job. 

Edit the DB records directly only when it is a last resort; this is not something you create a module to edit the invoice every other day.  

The best way is to use WHMCS internal APIs to call and update things, but again it won't work as invoice edit is blocked.

[WHMCS Ricardo]

On 4/16/2026 at 8:41 PM, Juanzo said:

@WHMCS Rex is it true that the only solution now, $allow_adminarea_invoice_mutation = true; in configuration.php, will be removed in future versions?

Hey Juanzo.

I am afraid this is correct, per the series v9.

[bear]

17 minutes ago, WHMCS Ricardo said:

I am afraid this is correct, per the series v9.

The one question I have is "why"? Clearly there's a need and demand for it, why is it not even considered being made optional, with warnings about not doing it or what have you. Why is it simply removed, with no options and so on. 

[LittleCreek]

On 4/18/2026 at 4:07 AM, Mr. Prateek said:

Edit the DB records directly only when it is a last resort;

I would say this issue qualifies needing a last resort technique since they are removing it. What else can I do?

 

Edited 2 hours ago by LittleCreek