Accessing layer (basemap) in ArcGIS Online (prompting credentials)

[jkumartry1980]

Dear All,

I am developing one application using ArcGIS JS Script 4.22 . In that application I need to use basemap layer of OSI. OSI has provided  a REST service link. When I use that link it asking for username and password. Basemap REST link was published in the ArcGIS online where other feature layers are published. I understand that key is needed to avoid prompting login. Could you please  help me how can I create key in ArcGIS online and how I have use along with the link in the code.

Could you please assist me in this regard, since it is very urgent.

Best Regards, 
K.Jayakumar

[Noah-Sager]

Hi @jkumartry1980, the documentation here should provide you with some good insight:

https://developers.arcgis.com/javascript/latest/arcgis-organization-portals/

https://developers.arcgis.com/javascript/latest/secure-resources/

[jkumartry1980]

Hi,

Thanks for the reply. I tried the following code to use this layer as basemap

 const imageTileLayer = new TileLayer({
                portalItem: {
                    id: "7c57414b0aad4cbc9999ad2be8d9a069"  
                }
            });
            const basemap = new Basemap({
                baseLayers: [
                  imageTileLayer                   
                ]
            });
             map = new Map({
                basemap: basemap          
            });

The particular layer was published in the ArcGIS online (Datasource URL 

https://mapgenie.osi.ie/arcgis/rest/services/WM/basemap_public/MapServer) but I got this error, kindly let me know how to resolve this issue. Please note all other layers are loading without any issue.