How to deal with this DFT warning

[tigerajs]

The shfit_enable used the internal module pin for pin mux, and after syn, it display as follows: Cannot idealize the test signal(DFT-199)

How to solve it, or ignore this warning? Thanks

 

[ajayg]

Check your constraints file. May be you have set the shift_enable signal as an ideal network.
check for the following string
set_ideal_network