I am using Allegro 16.2 XL . pls look at the image. I want to length match between U1 to J1 with 50 mil Tolerance and U1 to J2 with 100 mil Tolerance. to achieve this normally I will create xnet and pin pair under this. then I will select the pin pair U1 to J1 and add into one match group and select another pin pair U1 to J1 and add in to another Match group with different tolerance. But this is cannot be happen in another machine which my fried is using. I could not create pin pair on nets. then I xnet and put all xnet in to a match group. when I give analysis pin pair are automatically creating under the xnet which give error value ( RED colour) when length matching. I strongly believe this is because of some settings. can u guide me.