E- (SPMHDB-187): SHAPE boundary may not cross itself.

  class = ETCH

  subclass = TOP 

  Part of Symbol Def SHAPE_4725X4725.

      Which is part of a padstack as a SHAPE symbol.

  ERROR(SPMHDB-187): SHAPE boundary may not cross itself.

   Error cannot be fixed.

       Object has first point location at (-2.3622 2.3622).

Can you tell me how to solve my problem?

Thanks a lot.