diff --git a/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/actionmanager/bipaffiliations/PrepareAffiliationRelations.java b/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/actionmanager/bipaffiliations/PrepareAffiliationRelations.java
index 381558aae..a9c610de7 100644
--- a/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/actionmanager/bipaffiliations/PrepareAffiliationRelations.java
+++ b/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/actionmanager/bipaffiliations/PrepareAffiliationRelations.java
@@ -6,17 +6,13 @@ import static eu.dnetlib.dhp.common.SparkSessionSupport.runWithSparkSession;
 import java.io.Serializable;
 import java.util.Arrays;
 import java.util.List;
-import java.util.stream.Collectors;
 
 import org.apache.commons.io.IOUtils;
 import org.apache.hadoop.io.Text;
 import org.apache.hadoop.io.compress.GzipCodec;
 import org.apache.hadoop.mapred.SequenceFileOutputFormat;
 import org.apache.spark.SparkConf;
-import org.apache.spark.api.java.JavaRDD;
-import org.apache.spark.api.java.JavaSparkContext;
 import org.apache.spark.api.java.function.FlatMapFunction;
-import org.apache.spark.api.java.function.MapFunction;
 import org.apache.spark.sql.*;
 import org.apache.spark.sql.Dataset;
 import org.slf4j.Logger;
@@ -25,7 +21,6 @@ import org.slf4j.LoggerFactory;
 import com.fasterxml.jackson.databind.ObjectMapper;
 
 import eu.dnetlib.dhp.actionmanager.Constants;
-import eu.dnetlib.dhp.actionmanager.bipaffiliations.model.*;
 import eu.dnetlib.dhp.actionmanager.ror.GenerateRorActionSetJob;
 import eu.dnetlib.dhp.application.ArgumentApplicationParser;
 import eu.dnetlib.dhp.schema.action.AtomicAction;
diff --git a/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/actionmanager/bipaffiliations/model/AffiliationRelationDeserializer.java b/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/actionmanager/bipaffiliations/model/AffiliationRelationDeserializer.java
deleted file mode 100644
index ef4f200d0..000000000
--- a/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/actionmanager/bipaffiliations/model/AffiliationRelationDeserializer.java
+++ /dev/null
@@ -1,27 +0,0 @@
-
-package eu.dnetlib.dhp.actionmanager.bipaffiliations.model;
-
-import java.io.Serializable;
-import java.util.List;
-
-import com.fasterxml.jackson.annotation.JsonProperty;
-
-import lombok.Data;
-
-@Data
-public class AffiliationRelationDeserializer implements Serializable {
-	@JsonProperty("DOI")
-	private String doi;
-	@JsonProperty("Matchings")
-	private List<Matching> matchings;
-
-	@Data
-	public static class Matching implements Serializable {
-		@JsonProperty("RORid")
-		private List<String> rorId;
-		@JsonProperty("Confidence")
-		private double confidence;
-
-	}
-
-}
diff --git a/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/actionmanager/bipaffiliations/model/AffiliationRelationModel.java b/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/actionmanager/bipaffiliations/model/AffiliationRelationModel.java
deleted file mode 100644
index 6509f56ac..000000000
--- a/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/actionmanager/bipaffiliations/model/AffiliationRelationModel.java
+++ /dev/null
@@ -1,16 +0,0 @@
-
-package eu.dnetlib.dhp.actionmanager.bipaffiliations.model;
-
-import java.io.Serializable;
-
-import lombok.AllArgsConstructor;
-import lombok.Data;
-import lombok.NoArgsConstructor;
-
-@Data
-@AllArgsConstructor
-public class AffiliationRelationModel implements Serializable {
-	private String doi;
-	private String rorId;
-	private double confidence;
-}