I have this simple report attached and would like to export it to JSON using a schema also attached. Differently from subreports, images, etc I can't reference the json schema with a relative path. Since it is in the same folder of the report I expected to use just "schema.json" as expression to net.sf.jasperreports.export.json.schema . If I use an absolute path like 'C:usersusernamepathtoschema.json' it works fine. This also prevent me from using schemas in Jasper Server.