Solved
STM32H723 - PCKL1 & PCLK2 missing from clock tree in CubeMX 6.16.1 & 6.17.0
This had me stumped for a while - Thought I was going blind for a second LOL.
PCLK1 and PCLK2 identifiers are missing from the clock tree diagram for the STM32H723.
(They are present in the trees for F103, G431, F446 and F723).

