No Items listed in Sales Orders and Purchase Orders when using Advanced Partner Role

Scenario

- User is in standard or customized Advanced Partner role.

- When viewing Sales Orders and Purchase Orders, there are no items showing.

- The advanced partner role has been given at least View permission for Sales Orders, Purchase Orders and Items.

Solution

1. Edit the Item Records

2. Under Preferences tab, mark 'AVAILABLE TO ADV. PARTNERS' checkbox

3. Save