Double output with getfeaureinfo request with Mapserver and Openlayers

Question

I am trying to make an popup InfoTool in OpenLayers with a Mapserver file. Everything is working fine now. But when I click on the map I gives a double output. So I get for instance: cityname, citycode, cityname, citycode

I cannot find the problem. I think it has something to do with the mapfile.

MAP # start ************************************

NAME "bag"
EXTENT 6180 300854 287160 629230
STATUS ON
DEBUG ON
UNITS METERS
CONFIG "MS_ERRORFILE" "mapserv.log"
CONFIG "PROJ_LIB" "c:\proj\nad\"
TRANSPARENT ON
SYMBOLSET "symbols\agnsymbols.sym"  
FONTSET "fonts\fonts.list"

PROJECTION
    "init=epsg:28992"
    "ellps=bessel"
END

WEB
    IMAGEPATH "\tmp"
    IMAGEURL "\tmp\\"
    #TEMPLATE "template\woonplaats.html"
    METADATA
        WMS_TITLE "Geoserver.nl BAG service"
        WMS_ABSTRACT "Geoserver.nl BAG service"
        WMS_ACCESSCONSTRAINTS "none"
        WMS_ONLINERESOURCE "http://geo.nl/bag/mapserv.cgi?map=test_stefan.map&service=wms"
        WMS_SRS "EPSG:28992"
        #WMS_ENABLE_REQUEST "*"
        #OWS_SCHEMAS_LOCATION "http://ogc.dmsolutions.ca"
        WMS_FEATURE_INFO_MIME_TYPE "text/html"
    END
END

OUTPUTFORMAT
    NAME png
    DRIVER AGG/PNG
    MIMETYPE image/png
    IMAGEMODE RGB
END 

# Start of LAYER DEFINITIONS ---
# Woonplaats layer ---
LAYER
    NAME "Woonplaats"
    CONNECTION "user=user password=password dbname=dbname host=localhost port=5432"
    CONNECTIONTYPE postgis
    DATA 'geometrie from agn.woonplaats using unique wnpcode using srid=28992'
    METADATA
        WMS_TITLE "Woonplaats"
        WMS_ABSTRACT "Woonplaats"
        #GML_INCLUDE_ITEMS "all"
        #WMS_INCLUDE_ITEMS "all"
        #OWS_INCLUDE_ITEMS "all"
        RESULT_FIELD "woonplaats" 
    END
    PROJECTION
        "init=epsg:28992"
    END
    EXTENT 6180 300854 287160 629230
    STATUS ON
    DUMP TRUE
    TYPE POLYGON
    UNITS METERS
    SIZEUNITS PIXELS
    TOLERANCE 0
    TOLERANCEUNITS PIXELS
    TEMPLATE "template\woonplaats.html"
    CLASS
        MAXSCALEDENOM 200000
        STYLE
            OUTLINECOLOR 61 61 61
            WIDTH 4
        END
        STYLE
            OUTLINECOLOR 161 161 161
            WIDTH 2
        END
    END
    CLASS
        MINSCALEDENOM 200000
        STYLE
            OUTLINECOLOR 61 61 61
            WIDTH 1
        END
    END
END

END # End of Mapfile

The template file is as follows:

<!-- MapServer Template -->
 <tr>
       <td>Woonplaats</td>
       <td>[item name=woonplaats format=$value escape=none]</td>
       <td>[item name=wnpcode format=$value escape=none]</td>
     </tr>

Hope someone can give me some more insight

Answer 1

This question is answered by Frank. The features were doubled in the postgis table.