The following code works:p = <a href="http://arcpy.mp" target="_blank">arcpy.mp</a>.ArcGISProject("CURRENT")m = p.listMaps("MAP_NAME")[0]arcpy.CreateVectorTilePackage_management(<a href="http://m.name" target="_blank">m.name</a>, <a href="http://m.name" target="_blank">m.name</a> + '.vtpk', "ONLINE")This code uses ArcGISProject to access the current project with the CURRENT keyword, and then use listMaps to call the map within the project. Please refer to BUG-000098329 for more information regarding using map name instead of map as in_map parameter of the CreateVectorTilePackage function.