I am using virtuso 6.1.7 64bit with our own developed PDK. I want to enable/use the auto-router feature in layout XL. I have defined the constraint group (as defined in the cadence gpdk045) in the technology file and also the via details. When I design the schematic and convert it into layout the layout tool can detect all nets and components but when I select a single net and right click it to select "route iwth WA overrides" or "route with deafult lookup" then it doesnt work and virtuso window says:
(VCA-103011): Running Routability Check because data is new or has changed in the current session.
*WARNING* (VCA-220101): Unable to perform the requested routing due to above constraint error(s).
Please correct the error(s) and try again.
This is the only warning I am getting and no error about constraint. Can anyone please tell me what is wrong with my setup ?.