Our IT department developed an automated system which basically automates the expense request process in our Company, including travel requests.

The system has an electronic table that defines the range of amount of expense that managers can approve in each department. 

This table is currently being maintained/updated by Finance but they are saying that ownership of maintaining this table should be handed over to the IT department and that they only need to verify any request for change in the amount managers can approve.

What is the best practice regarding wo should own this expense approver's table. Should it be owned entirely by Finance (including maintenance of the table) or should it be jointly owned by Finance (reviews requested change in approvers) and IT (updates the table).