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I would like to convert .shp into .gpx. I tried to "save as" gpx but it gives an OGR error:
creation of field ObjectId failed (OGR error: Field of name 'Name' is not supported in GPX schema. Use GPX_USE_EXTENSIONS creation option to allow use of the element.)
GPX_USE_EXTENSIONS=Y does not work. Checking 'Skip Attribute Creation' does not work.