Hi @Anastasiia ,
Could you please share a bit more about your scenario?
Do you want to upload pictures captured from PowerApps app to your D365 NAV table?
If you want to upload pictures captured from PowerApps app to your D365 NAV table, I afraid that there is no direct way to achieve your needs in PowerApps currently.
Since NAV stores images in MediaSet/Media type, we cannot pass them (images) through Odata webservices (which is what the Dynamics NAV Connector uses).
As an alternative solution, you could consider convert NAV images to base64 and send them to image storage service. Capture the direct link of the images and store them in a field on Item table. Pass that field to PowerApp through Odata. PowerApp will then recognize the image URL and display the images.
Please check and see if the following blog would help in your scenario:
https://www.ctrlshiftf4.com/2017/09/10/build-a-powerapp-add-images-part2/
Best regards,