If you need to change a Buy Order, go to Settings and select the submenu of the Buys module > Order Change.
On the Order Change page, select from the checkboxes: which will be editable in your orders, and if so, if this will cause the workflow to restart.Select all the data you want to change, and then click Save.
Once that is done, click Buy in the left sidebar and in the Buy module select Orders.
On My Orders page, select the order that requires changes.
Scroll to the bottom of the View Order page and click Change.
What has been enabled for changes will be amenable to this. Change as needed, and then finish by clicking Save.
*Important: Enabled data may change on orders with status:
Approved - Waiting accept;
Returned - Supplier.