'This layer is unavailable' message in map, but nothing wrong with layer

RandyMcGregor3

I published over a layer. and now the maps the layer was in are giving me this error message:

There is nothing wrong with the layer. I can open it fine. If I click on the error message it takes me to the layer - and the layer opens perfectly fine. But the map has decided to reject it. I have to reload the layer (again, works fine), symbolize it, redo the labels, etc... I had to do it all from memory because the layer was completely dead - No information available. 

We are going to have to overwrite this hosted service with some regularity. Any idea what would cause this?

Thank you,

Randy McGregor

 

RandyMcGregor3

I noticed that this layer had become unresponsive in an arcade expression as well. After fighting with it for a while, I realized that the layer id had changed from 0 to 1. I changed the layer id to 1 in the arcade expression and it worked.

My guess is that this is why the layer became unresponsive in the map, even though it was still a perfectly fine feature layer. The map was "looking for" layer id 0, and the only layer in that map service now has a layer id of 1.