unclear question. please provide more details and complete information

It depends. Give us more details (the circuit you want to reduce).

I mean that, can we get identical impedance behavior for two different equivalent circuits?

Ahmed Qasim,

Yes, it is possible. But the two equivalent circuits are not necesserily describing the same mechanism, that's why it would be better to know the mechanism at first, then trying to fit the data.

@Ahmed Qasim,

Here are two different circuits with the same global impedance.