aras innovator is current value is 1 for all rows

When i update an item in aras innovator, it was creating new row in the database and when i check the aras  is_current value, it was 1 for all rows.

Root Cause: you have not enabled Versionable
Solution: It should be 1 for latest row

Open Aras innovator
Go to Administration
Go to System Events--> Item Types
Search for your Item type.
Open it.
Unlock
Check "Versionable" check box
Save

Now you will see only one row  is_current =1