Cisco 7000 Hardware Installation And Maintenance page 64

Functional Overview
If the target hardware version is different from the actual hardware version, a warning message
appears when you boot the router, indicating that there is a disparity between the target hardware and
the actual hardware. You will still be able to load the new image; however, contact a service
representative for information about upgrades and future compatibility requirements.
1-60 Cisco 7000 Hardware Installation and Maintenance