Line offset issue with Geoserver

Question

I'm using Geoserver 2.6.2 and QGIS 2.10 to check my WMTS display. According to the documentation, I have tried 2 different ways to draw a line offset for a line-type layer, but none is working correctly.

If I test my SLD within Geoserver GUI, I get an error message on the PerpendicularOffset line. In QGIS, my layer is displaying but the offset is not taken into account.

Test 1:

   <LineSymbolizer>
     <Stroke>
       <CssParameter name="stroke">#0000FF</CssParameter>
       <CssParameter name="stroke-width">3</CssParameter>
     </Stroke>
       <PerpendicularOffset>3</PerpendicularOffset>
   </LineSymbolizer>

Test 2:

   <LineSymbolizer>
     <Stroke>
       <CssParameter name="stroke">#0000FF</CssParameter>
       <CssParameter name="stroke-width">3</CssParameter>
     </Stroke>
       <VendorOption name="PerpendicularOffset">3</VendorOption>
   </LineSymbolizer>

Answer 1

If you are looking at the latest documentation then that is the correct syntax but you are using an old GeoServer so need to consult the older manual which makes no mention of the parameter. If you'd like to use this feature you will need to upgrade your GeoServer version to 2.9+.