Configure the account being used to connect to the SCCM Database
How you can configure the account being used to connect to the SCCM Database (which is probably being used on a schedule) without being able to manually select a “RUN AS” account in the drop down box (like the default SCCM connectors have)
Answers
Setting up the SCCM connector is explained here:
https://docs.microsoft.com/en-us/system-center/scsm/import-data-cm?view=sc-sm-2019#create-a-configuration-manager-connector
The short version is that you do select a RunAs account with the SCCM connector.