The Feature layer and Tile layer options are unavailable when adding items in Portal for ArcGIS

Description

In Portal for ArcGIS, items can be added to the My Contents page as feature layers or tile layers. However, when attempting to add these items, the Feature layer and Tile layer options are unavailable, as shown in the image below.

Cause

Portal for ArcGIS is not federated with an ArcGIS Server site, and the ArcGIS Server site is not assigned as a hosting server.

Solution or Workaround

Federate Portal for ArcGIS with an ArcGIS Server site and assign it as the hosting server. Refer to Portal for ArcGIS: Integrate your portal with ArcGIS Server for instructions.

The image below demonstrates the Feature layer and the Tile layer options available after assigning a hosting server.