Your parcel has been placed into a bag together with other items going the same way. This is a routine handling step at a PostNL sorting or processing facility. "Nested" simply means one item is packed inside a larger container, here a bag, so many parcels can be moved as a single unit. The parcel is inside the courier's network, not with a delivery driver yet.
No, this message by itself is normal. It is an ordinary in-transit step and does not point to a problem. The scan only shows that the parcel was bagged for onward transport. If the tracking stays on this line for longer than the previous steps took, that is worth watching, but the message alone is not a warning.
The bag is closed, loaded onto transport and sent to the next sorting point or to the destination country. There the bag is opened and your parcel is scanned again. Later steps usually show arrival at another facility, customs handling for international parcels, and finally handover to a local delivery service.
With the use of our tracking form you can easily check the status of your package. Also if you want to tracking Netherlands Post and get your package location updates to your e-mail, you can Register on our website.
Netherlands Post — is not the only postal service that you can track at PackageRadar. See full list of postal services available.