i started to do modeling of face using poly by poly method (with 2 image planes - front and side view).
eveything was going smooth - i was converting poly to subdiv coupple of times to check quality of my work [

"// Error: polyToSubdiv1 (Poly To Subdiv Node): The conversion to a subdivision surface failed.
// One or more duplicated edges were present.
// Repair the duplicate edges by selecting the polygon
// and issuing the following command, then try again:
select .e[525] ;string $v[] = `polyListComponentConversion -fe -tv`;select $v;polySplitVertex;polyMergeVertex -d 0.0 -tx 1; //"

Thanks for help :bow: