What is the prefered way to manage entry assets using the service api? I have a bunch of product images that I need to upload and assign to the products. I started using the media service bulk operations but that is quite clumsy... And it stopped working after a while, error message that contentLink is missing. No clue about that.
Isn't there some other way to work with images?
You can use content/blob APIs to upload images - as alternative. Of course it will require some code, but I don't know of better solution.
Regarding ServiceAPI - can you contact our developer support with more information. It should work, and if there are errors, the error messages should be clear.