=Installation+Location-Device Vs =Function+Location-Device IEC 81346

Hi All,

Hope you can help.

We have been using the Promis-e software since 1995. We have used the Promis-e standard project setup since the beginning =Installation+Location-Device.

Our parent company wants us to change from this standard method to =Function+Location-Device and keeps quoting IEC 81346-2 2019 for the change.

Does anyone know where the '=Installation+Location-Device' methodology comes from or if it is referenced in an EN/IEC standard.