Hello, I'm building some governance flows in our environment in an own solution and want to start a sub-flow from CoE.
Run a child flow: CLEANUP - Admin | Sync Template v3 (Check Deleted)
But the flow is not in our list to choose from and if I try to add it manually, I receive the error

Does anybody know, how I can run this child flow from an self-build flow?
I know this flow can run for longer time, but at least it should be worth a try. Thank you!