There is no functionality to track asset's user and custodian history in Out of Box Maximo.
As a workaround, you can use Audit functionality
1. Go to the Database Configuration app
- In the Attributes tab, check 'Audit Enabled?' for attribitues PERSONID,ISPRIMARY,ISCUSTODIAN,ISUSER
3. In Admin mode, Apply Configuration Changes.
Then, whenever adding/changing/deleting user/custodian information, it will be tracked in A_ASSETLOCUSERCUST table.