So, if you are used to updating Icons to entities in the classic UI, here’s what you need to do in order to update the SVG image of a Custom Entity you just created using new Power Apps Maker portal.

Let’s see below is you custom entity and it comes with its default icon which you want to set to a custom SVG icon.

Adding SVG Icon to Custom Entity

Given that you have appropriate access to the be able to Customize the system, follow the below steps –

1. In your solution, you have the table as well as the SVG Icon you just created the Web Resource for and uploaded an image which you want to set as Icon.
   
   
2. Now, select the Table you want to set the SVG icon to, and click on Properties.
   
   
3. On the right hand pane, expand the Advanced area and look for the Choose table image field.
   
   
   
4. Then, start typing the Display Name of the SVG icon which you wish to set to this Entity.
   
   
   Click Save if no other changes are to be done.
   
   
5. Once Saved, click on Publish.
   
   
6. Now, when you refresh the App where the custom entity is listed in the Sitemap, you’ll see the icon updated.
   

Hope this was useful!

Thank you!