The root.JSON map style file is not uploaded to the item resources when a vector tile package is published as a vector tile service in Portal for ArcGIS.
Last Published: March 1, 2016Portal for ArcGIS
Bug ID Number
January 21, 2016
February 15, 2023
Portal for ArcGIS
Operating System Version
The bug has been fixed. See the Version Fixed and Additional Information, if applicable, for more information.
Extract the contents of the vector tile package, and upload the root.JSON file manually to the portal item using the 'Add Resources' operation in the portal REST API.
Navigate to the portal's REST or Sharing API page, and go to Content > portal > ItemID > Add Resources.