Hi Andrew, Yes, i guess it would be difficult but thanks anyway. I progress a little bit. Just in case it can be useful to somebody: I am having around 10000 ambiguities but if I increase the threshold to 20000 assura provides a clean LVS. The clean LVS does not satisfy me completely and I am try to understand the nature of these ambiguities to avoid them when possible and understand why assura expands the feedthrough cells (they are MOS caps with D and S shorted to the same potential). Somebody can tell me when or in which conditions assura expands a cell? in my case schematic hierarchy and layout hierarchy are equal. Regards, Manuel
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