This article discusses how to fix the following issue:
You should expect a warning message if reserving more units (quantities) as available for a specific Lot Number, when saving a Sales Order.
Consider the following steps to explain further:
1. Go to Maintenance | Inventory| Inventory Items.
2. Create a new Lot Inventory Item with Item Code AAA.
3. Go to Transactions | Order Entry | Purchase Order.
4. Capture and process a new Supplier Invoice for item AAA as follows:
Quantity: 1 x Ordered and 1 x Confirmed of item AAA.
In the same process, create Lot Number Lot123.
5. Go to Maintenance | Inventory | Lot Tracking. Here, find and approve Lot123.
6. Go to Order Entry | Maintenance | Order defaults | Sales Order tab.
7. Select the option to activate reserved stock and save the change made.
8. Go to Transactions | Order Entry | Sales Order.
9. Capture the new SO as follows:
10. Click on Close and Save.
11. Go to Transactions | Order Entry | Sales Order| Open.
12. Find and open the same saved Sales Order.
13. Adjust the quantities: 2 for Reserved and Confirm.
14. Click on Close and Save.
15. Notice there’s no warning message displayed such as: "Line 1 Insufficient quantity available in Lot123 to reserve Available 0"
Consider the following advice to resolve the above issue/error:
This issue was due to a known software bug, logged as IS-15412
Fortunately, it has been fixed since Evolution version 11.0.5.
Therefore, upgrade your Evolution package to resolve this matter.
Currently, the latest available version is 11.2.1 (as in March 2026).