diff --git a/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/raw/CopyHdfsOafApplication.java b/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/raw/CopyHdfsOafApplication.java
index 25b343c1a..c016e2156 100644
--- a/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/raw/CopyHdfsOafApplication.java
+++ b/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/raw/CopyHdfsOafApplication.java
@@ -67,23 +67,16 @@ public class CopyHdfsOafApplication extends AbstractMigrationApplication {
 		final String hdfsPath = parser.get("hdfsPath");
 		log.info("hdfsPath: {}", hdfsPath);
 
-		final String isLookupUrl = parser.get("isLookupUrl");
-		log.info("isLookupUrl: {}", isLookupUrl);
-
-		final ISLookUpService isLookupService = ISLookupClientFactory.getLookUpService(isLookupUrl);
-		final VocabularyGroup vocs = VocabularyGroup.loadVocsFromIS(isLookupService);
-
 		final Set<String> paths = mdstorePaths(mdstoreManagerUrl, mdFormat, mdLayout, mdInterpretation);
 
 		final SparkConf conf = new SparkConf();
 		conf.set("spark.serializer", "org.apache.spark.serializer.KryoSerializer");
 		conf.registerKryoClasses(ModelSupport.getOafModelClasses());
 
-		runWithSparkSession(conf, isSparkSessionManaged, spark -> processPaths(spark, vocs, hdfsPath, paths));
+		runWithSparkSession(conf, isSparkSessionManaged, spark -> processPaths(spark, hdfsPath, paths));
 	}
 
 	public static void processPaths(final SparkSession spark,
-		final VocabularyGroup vocs,
 		final String outputPath,
 		final Set<String> paths) {
 
diff --git a/dhp-workflows/dhp-graph-mapper/src/main/resources/eu/dnetlib/dhp/oa/graph/copy_hdfs_oaf_parameters.json b/dhp-workflows/dhp-graph-mapper/src/main/resources/eu/dnetlib/dhp/oa/graph/copy_hdfs_oaf_parameters.json
index 1e862198f..1d89017c5 100644
--- a/dhp-workflows/dhp-graph-mapper/src/main/resources/eu/dnetlib/dhp/oa/graph/copy_hdfs_oaf_parameters.json
+++ b/dhp-workflows/dhp-graph-mapper/src/main/resources/eu/dnetlib/dhp/oa/graph/copy_hdfs_oaf_parameters.json
@@ -28,11 +28,5 @@
 		"paramLongName": "mdInterpretation",
 		"paramDescription": "metadata interpretation",
 		"paramRequired": true
-	},
-	{
-		"paramName": "isu",
-		"paramLongName": "isLookupUrl",
-		"paramDescription": "the url of the ISLookupService",
-		"paramRequired": true
 	}
 ]
\ No newline at end of file
diff --git a/dhp-workflows/dhp-graph-mapper/src/main/resources/eu/dnetlib/dhp/oa/graph/raw_all/oozie_app/workflow.xml b/dhp-workflows/dhp-graph-mapper/src/main/resources/eu/dnetlib/dhp/oa/graph/raw_all/oozie_app/workflow.xml
index c4cca52f6..137c69ed8 100644
--- a/dhp-workflows/dhp-graph-mapper/src/main/resources/eu/dnetlib/dhp/oa/graph/raw_all/oozie_app/workflow.xml
+++ b/dhp-workflows/dhp-graph-mapper/src/main/resources/eu/dnetlib/dhp/oa/graph/raw_all/oozie_app/workflow.xml
@@ -569,7 +569,6 @@
             <arg>--mdFormat</arg><arg>OAF</arg>
             <arg>--mdLayout</arg><arg>store</arg>
             <arg>--mdInterpretation</arg><arg>graph</arg>
-            <arg>--isLookupUrl</arg><arg>${isLookupUrl}</arg>
         </spark>
         <ok to="wait_graphs"/>
         <error to="Kill"/>