20004: Layer uses a simple line symbol with a style other than solid

Your layer contains a simple line symbol with a line style other than solid. The display of this symbol in a basemap layer or optimized map service will potentially differ from your standard ArcMap display.


More information

This warning message is simply telling you the simple line symbol may appear different in a basemap layer or an optimized map service. This is because this type of symbol will draw as a solid style at a size larger than 1 point in ArcMap's display. In general, cartographic line symbols offer more control and better appearance than simple line symbols when drawing with patterns.