There has been a meter exchange at a service point in the past year.

Whenever a device is installed or removed at a service point, an installation event is created. Installation events capture the history of the devices that have been installed at a service point and link a specific device configuration to the service point. There are different types of installation events for different types of devices, such as smart meters, manual meters, items, and communication components. In this case, since there has been a meter exchange at a service point in the past year, there must be two installation events: one for the removal of the old meter and one for the installation of the new meter. Both installation events will have the same service point ID, but different device configuration IDs and dates/times. References: About Install Events, Maintaining Install Events