Sage 100

We are testing items to return in RMA, but we are getting the notification that the item isn't setup for returns. Where can we enable this?

Is there a way to change an item code or merge with a new item code while retaining the sales history from the original code?

Is there a way in Sage 100 to advise when an item is not available? EX: If I am putting in an order for 12 tennis nets and those nets have already been committed to other orders? I know you can pull up each item individually to see what’s on hand and…