If an asset has been disposed of it can easily be re-instated,
In the Asset Register go back into the Disposals option
Enter the Asset Class and Item, you will need to enter the Item number, the Asset won't appear in the dropdown list as it has already been disposed of.
The Process icon will change to Re-instate and the Disposal Details will be displayed
When the Re-instate option is clicked a screen will appear where the Nominal Ledger posting date should be entered
Enter the correct date and click on OK and the asset will be re-instated.