New features POINT in a layer file

Discussion created by Razzino13 on Sep 30, 2013
I have imported  a empty point shp file with prj file and now I have a shp and feature file.
I modify the feature file to add new point features.
I add my feature file to my Web Map and start to add the points.
I save my Web Map.
When re open my web map I have this error message;
The layer does not contain information about spatial references and cannot be added to the map.
What is the problem ?