What are the Best Practices followed for inactivating an inventory organization

The client has certain inventory orgs that they no longer use as a part of their business process. We wanted to know what are the best practices followed for inactivating an inventory org in the system. We believe the system currently does not have any validations  We would also like to know if there are any reports that show if there are any transactions that are pending so that the warehouse team may close these before we inactivate the Inventory org.