database check 检查错误分析

database check 检查错误分析原因
ERROR IN SHAPE (-73.46 75.00)
  class = ETCH
  subclass = TOP
  Part of Symbol Def SH_KEYPAD_SQ150.
      Which is part of a padstack as a SHAPE symbol.
  SHAPE boundary may not cross itself.
  Error cannot be fixed.
ERROR IN SHAPE (-78.27 -70.00)
  class = ETCH
  subclass = TOP
  Part of Symbol Def SH_CIR_210CUT2.
      Which is part of a padstack as a SHAPE symbol.
  SHAPE boundary may not cross itself.
  Error cannot be fixed.
Regenerating DRC
  21 original DRC errors replaced by
  21 current DRC errors.
0 warnings, 2 errors detected, 0 errors  fixed.
谢谢，知道的请告知