Your layer relies on a feature class extension. In order for the layer to perform as expected within a GIS service, the feature class extension must also be registered on the server.
- Make sure that the appropriate class extension is registered on the server.
- Remove the layer from your document.
Class extensions allow you to customize geodatabase behavior. In order for layers utilizing class extensions to work as expected within a GIS service, the appropriate class extensions must be available to the server. If these class extensions are not accessible by the server, the specialized behavior, or functionality, will be unavailable from the GIS service.