Delete outline

I want to delete the following object (sorry, cannot upload screenshot because "An error occurred, please try again or contact your administrator."):

```

LISTING: 1 element(s)

< SHAPE(auto-generated) >

class CAVITY

subclass BOTTOM

Shape is solid filled in Smooth mode

Area: 6.350 (sq cm)

Exterior boundary:

segment:xy (-13200.00 12000.00) xy (12200.00 12000.00) width (0.00)

segment:xy (12200.00 12000.00) xy (12200.00 -13000.00) width (0.00)

segment:xy (12200.00 -13000.00) xy (-13200.00 -13000.00) width (0.00)

segment:xy (-13200.00 -13000.00) xy (-13200.00 12000.00) width (0.00)

*** Part of the Dynamic Shape ***

class BOUNDARY

subclass BOTTOM

Shape priority: 0

Number of etch shapes: 1

Dynamic fill style: SMOOTH

Area: 6.350 (sq cm)

Original boundary:

segment:xy (-13200.00 -13000.00) xy (12200.00 -13000.00) width (0.00)

segment:xy (12200.00 -13000.00) xy (12200.00 12000.00) width (0.00)

segment:xy (12200.00 12000.00) xy (-13200.00 12000.00) width (0.00)

segment:xy (-13200.00 12000.00) xy (-13200.00 -13000.00) width (0.00)

```

When I select this object and click on "delete", the software says:

```
Selected item not valid for current operation, ignored: Shape(auto-generated) "Not On A Net, Cavity/Bottom"

No valid items selected for the current operation, exiting.

```

How can I delete this?