Problem: Getting the T-Stock Error pop-up when selling an item.
Solution: Run the "Fix Location Links to Stock Records" in the Toolbox Routine.
Steps:
1. Secure your backup first.
2. Go to "Setup Tools" -> "Utilities" -> "Tool Box"
3. Select "Yes" to the Warning,
4. Go to "Inventory Routines" -> "Stock Control Routines" -> "Fix Location Links to Stock Records"
5. Click the "Fix Location to Stock links" button.