•First check System Option # 80.
Use menu path: System > Preferences > System Options tab > Scroll down to System Option #80 - "Prevent oversell of items". It must be checked for this option to be available in Inventory File Maintenance.
•Next set up Inventory File Maintenance.
1. Use menu path: File > Inventory Maintenance.
2. Find the desired inventory item.
3. | Click to check the box for Allow Oversell. |
4. | Click the Apply button now the oversell restriction is bypassed for that item. |
5. | Click OK when done with item updates. |