Level shifter isn't inserted

YakDamBam said:

I'm working with Design Compiler and UPF to insert level shifters and isolation cells into a design
I have two power domains and want to insert level shifter between two power domains

I write UPF associated with level shifter like this

set_level_shifter HtoL_sig_to_msb \
-domain SWITCH \
-applies_to inputs \
-rule high_to_low \
-location self

During synthesizing, there are errros and there aren't level shifters in netlist confirmed by VCS

So, I wonder if it is inserted in either the synthetic flow or the physical flow.
If level shfiter is inserted in synthetic flow, why level shifter isn't inserted in my case?

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