Update custom filed on a closed invoice.

Hi folks,

    Hope you are doing well.

    During using Acumatica ERP, recently we have such a quest about updating a closed invoice.

The details will be:

1. Create a custom db field on invoice screen AR300010.
2. Add it to UI.
3. Closed the invoice.
4. Update value on this field.

Looks once an invoice is closed, all the fields get locked down.

We wonder that is there a way to make that particular field editable even on a closed invoice?

Best regards.

Yan