layer notification warning unreconciled new layers
The properties of these layer should be evaluated to ensure they display as intended in paper space viewport and in layer states.view the list of unreconciled new layers in the layer properties manger?

After you confirm that a new layer conforms to your layer property requirements, you can remove it from the list of unreconciled layers.

1-Click Home tab => Layers panel => Layer Properties
2-In the Layer Properties Manager, Filters area, click the Unreconciled New Layers node in the Filters panel.
3-In the layer list, right-click a layer, and click Reconcile Layer.

Unreconciled new layers exist in the drawing autocad