diff --git a/src/main/java/it/gov/pagopa/bizeventsservice/model/response/Debtor.java b/src/main/java/it/gov/pagopa/bizeventsservice/model/response/Debtor.java
index c41762f5..a09c5d39 100644
--- a/src/main/java/it/gov/pagopa/bizeventsservice/model/response/Debtor.java
+++ b/src/main/java/it/gov/pagopa/bizeventsservice/model/response/Debtor.java
@@ -5,6 +5,7 @@
 import javax.validation.constraints.NotBlank;
 import javax.validation.constraints.NotNull;
 
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import it.gov.pagopa.bizeventsservice.model.response.enumeration.EntityUniqueIdentifierType;
 import lombok.AllArgsConstructor;
@@ -16,6 +17,7 @@
 @Data
 @NoArgsConstructor
 @AllArgsConstructor
+@JsonIgnoreProperties(ignoreUnknown = true)
 public class Debtor implements Serializable{
     /**
 	 * generated serialVersionUID
diff --git a/src/main/java/it/gov/pagopa/bizeventsservice/service/impl/TransactionService.java b/src/main/java/it/gov/pagopa/bizeventsservice/service/impl/TransactionService.java
index 9750f247..7296ae69 100644
--- a/src/main/java/it/gov/pagopa/bizeventsservice/service/impl/TransactionService.java
+++ b/src/main/java/it/gov/pagopa/bizeventsservice/service/impl/TransactionService.java
@@ -1,5 +1,19 @@
 package it.gov.pagopa.bizeventsservice.service.impl;
 
+import java.io.Serializable;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Optional;
+
+import org.apache.commons.lang3.SerializationUtils;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Sort;
+import org.springframework.data.domain.Sort.Direction;
+import org.springframework.stereotype.Service;
+import org.springframework.util.CollectionUtils;
+
 import com.azure.spring.data.cosmos.core.query.CosmosPageRequest;
 
 import feign.FeignException;
@@ -25,24 +39,6 @@
 import it.gov.pagopa.bizeventsservice.util.Constants;
 import it.gov.pagopa.bizeventsservice.util.Util;
 
-import org.apache.commons.lang3.SerializationUtils;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.beans.factory.annotation.Value;
-import org.springframework.data.domain.Page;
-import org.springframework.data.domain.Sort;
-import org.springframework.data.domain.Sort.Direction;
-import org.springframework.stereotype.Service;
-import org.springframework.util.CollectionUtils;
-
-import java.io.Serializable;
-import java.util.ArrayList;
-import java.util.Comparator;
-import java.util.HashSet;
-import java.util.List;
-import java.util.Optional;
-import java.util.Set;
-import java.util.stream.Collectors;
-
 @Service
 public class TransactionService implements ITransactionService {
 
@@ -83,16 +79,9 @@ public TransactionListResponse getTransactionList(String taxCode, Boolean isPaye
         final Sort sort = Sort.by(Sort.Direction.fromString(direction), columnName);
         final CosmosPageRequest pageRequest = new CosmosPageRequest(0, size, continuationToken, sort);
         final Page<BizEventsViewUser> page = this.bizEventsViewUserRepository.getBizEventsViewUserByTaxCode(taxCode, isPayer, isDebtor, pageRequest);
-        Set<String> set = new HashSet<>(page.getContent().size());
         
-        List<BizEventsViewUser> listOfViewUser = page.getContent().stream()
-        		.sorted(Comparator.comparing(BizEventsViewUser::getIsDebtor,Comparator.reverseOrder()))
-        		.filter(p -> set.add(p.getTransactionId()))
-        		.collect(Collectors.toList())
-        		.stream()
-        		.sorted(Comparator.comparing(BizEventsViewUser::getTransactionDate,Comparator.reverseOrder()))
-        		.toList();
-
+        List<BizEventsViewUser> listOfViewUser = page.getContent();
+        
         if(listOfViewUser.isEmpty()){
             throw new AppException(AppError.VIEW_USER_NOT_FOUND_WITH_TAX_CODE_AND_FILTER, taxCode, isPayer, isDebtor);
         }