You can edit invoices in the mobile app only if the Draft Mode check box is selected for their type in the Back Office application.
On the Invoices screen, tap the invoice that you want to update, and then tap Edit.
Note Invoices in draft status have a small Edit icon on the left.
To edit an attached work order
On the Info screen, tap the work order that you want to update, make the appropriate changes...
...and then on the last screen, tap Save.
To attach more work orders
On the Info screen, tap the Add icon, and then on the Work Orders screen, select the work orders that you want to attach.
To delete a work order
On the Info screen, tap the Delete icon next to the work order that you want to detach, and then tap Delete.
Note You cannot delete a work order if it is the only work order attached to the invoice.
To change the invoice date
Tap the Date field, select the date that you want in the date picker, and then tap Done.
You can update answers on the Questions screen if a question section is assigned to the invoice type.
Choose if you want to save the invoice as draft or final, if needed, select additional actions, and then tap Save.