A primary clock <clock_name> is
created on an inappropriate pin <pin_name>. It
is recommended to create a primary clock only on a proper clock root (input port or
primitive output pin with no timing arc).
A primary clock <clock_name> is
created on an inappropriate pin <pin_name>. It
is recommended to create a primary clock only on a proper clock root (input port or
primitive output pin with no timing arc).