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TMUX1237: About IBIS model loading error

Part Number: TMUX1237

Hi.

I want to use the IBIS model of TMUX1237 on the simulator.
The simulator used is ADS(Keysight).
However, when the IBIS model is read, the following error message appears and it cannot be used.
-------------------------------------------------- -------------------------------------------------- -------------------------------------
The model'gnd' in file'D:\USER\model\TMUX1237_ibis_scdm235a\tmux1237.ibs' has the following data errors.
Simulation errors will occur if left unchanged.
Please select a different pin-model combination.

ERROR-Model'gnd' not found in the IBIS file'D:\USER\model\TMUX1237_ibis_scdm235a\tmux1237.ibs'
-------------------------------------------------- -------------------------------------------------- -----------------------------------------
When the pin information of the read IBIS model is confirmed, the same error message as below appears for S2, S1, and D.
Also, S2, S1, D were displayed as NC pins.

-------------------------------------------------- -------------------------------------------------- -----------------------------------------
The model'nc' in file'D:\USER\model\TMUX1237_ibis_scdm235a\tmux1237.ibs' has the following data errors.
Simulation errors will occur if left unchanged.
Please select a different pin-model combination.

ERROR-Model'nc' not found in the IBIS file'D:\USER\model\TMUX1237_ibis_scdm235a\tmux1237.ibs'
-------------------------------------------------- -------------------------------------------------- -----------------------------------------
It seems like there is a data error in model. How can I resolve this issue?