diff --git a/pom.xml b/pom.xml
index 0556badb..6997e0d7 100644
--- a/pom.xml
+++ b/pom.xml
@@ -7,7 +7,7 @@
 
 	<groupId>fr.insee.pearljam</groupId>
 	<artifactId>pearljam-back-office</artifactId>
-	<version>5.1.4</version>
+	<version>5.1.5</version>
 	<name>Pearl-Jam-Back-Office</name>
 	<description>Back-office services for PearlJam</description>
 
diff --git a/src/main/java/fr/insee/pearljam/api/dto/surveyunit/SurveyUnitDto.java b/src/main/java/fr/insee/pearljam/api/dto/surveyunit/SurveyUnitDto.java
index a8027300..866402d8 100644
--- a/src/main/java/fr/insee/pearljam/api/dto/surveyunit/SurveyUnitDto.java
+++ b/src/main/java/fr/insee/pearljam/api/dto/surveyunit/SurveyUnitDto.java
@@ -7,7 +7,6 @@
 import fr.insee.pearljam.api.domain.ContactAttemptConfiguration;
 import fr.insee.pearljam.api.domain.ContactOutcomeConfiguration;
 import fr.insee.pearljam.api.domain.IdentificationConfiguration;
-import fr.insee.pearljam.api.domain.SurveyUnit;
 import fr.insee.pearljam.api.dto.address.AddressDto;
 import fr.insee.pearljam.api.dto.campaign.CampaignDto;
 import fr.insee.pearljam.api.dto.person.PersonDto;
@@ -67,35 +66,12 @@ public class SurveyUnitDto {
 	private IdentificationConfiguration identificationConfiguration;
 	private ContactOutcomeConfiguration contactOutcomeConfiguration;
 	private ContactAttemptConfiguration contactAttemptConfiguration;
+	private boolean useLetterCommunication;
 
 	private List<PersonDto> persons;
 
 	private AddressDto address;
 
-	public SurveyUnitDto() {
-	}
-
-	public SurveyUnitDto(SurveyUnit su, SurveyUnitVisibilityDto visibility, Boolean extended) {
-		this.id = su.getId();
-		this.campaign = su.getCampaign().getId();
-		this.campaignLabel = su.getCampaign().getLabel();
-		this.managementStartDate = visibility.managementStartDate();
-		this.interviewerStartDate = visibility.interviewerStartDate();
-		this.identificationPhaseStartDate = visibility.identificationPhaseStartDate();
-		this.collectionStartDate = visibility.collectionStartDate();
-		this.collectionEndDate = visibility.collectionEndDate();
-		this.endDate = visibility.endDate();
-		this.identificationConfiguration = su.getCampaign().getIdentificationConfiguration();
-		this.contactAttemptConfiguration = su.getCampaign().getContactAttemptConfiguration();
-		this.contactOutcomeConfiguration = su.getCampaign().getContactOutcomeConfiguration();
-		if (Boolean.TRUE.equals(extended)) {
-			this.persons = su.getPersons().stream()
-					.map(PersonDto::new)
-					.toList();
-			this.address = new AddressDto(su.getAddress());
-		}
-	}
-
 	public SurveyUnitDto(String idSurveyUnit, CampaignDto campaign, SurveyUnitVisibilityDto visibility) {
 		this.id = idSurveyUnit;
 		this.campaign = campaign.getId();
@@ -106,6 +82,7 @@ public SurveyUnitDto(String idSurveyUnit, CampaignDto campaign, SurveyUnitVisibi
 		this.collectionStartDate = visibility.collectionStartDate();
 		this.collectionEndDate = visibility.collectionEndDate();
 		this.endDate = visibility.endDate();
+		this.useLetterCommunication = visibility.useLetterCommunication();
 		this.identificationConfiguration = campaign.getIdentificationConfiguration();
 		this.contactAttemptConfiguration = campaign.getContactAttemptConfiguration();
 		this.contactOutcomeConfiguration = campaign.getContactOutcomeConfiguration();
diff --git a/src/main/java/fr/insee/pearljam/api/surveyunit/dto/SurveyUnitVisibilityDto.java b/src/main/java/fr/insee/pearljam/api/surveyunit/dto/SurveyUnitVisibilityDto.java
index 5e1f6a7f..efa9d91d 100644
--- a/src/main/java/fr/insee/pearljam/api/surveyunit/dto/SurveyUnitVisibilityDto.java
+++ b/src/main/java/fr/insee/pearljam/api/surveyunit/dto/SurveyUnitVisibilityDto.java
@@ -20,7 +20,8 @@ public record SurveyUnitVisibilityDto(
 		Long identificationPhaseStartDate,
 		Long collectionStartDate,
 		Long collectionEndDate,
-		Long endDate
+		Long endDate,
+		boolean useLetterCommunication
 ) {
 
 	public static SurveyUnitVisibilityDto fromModel(Visibility visibility) {
@@ -30,6 +31,7 @@ public static SurveyUnitVisibilityDto fromModel(Visibility visibility) {
 				visibility.identificationPhaseStartDate(),
 				visibility.collectionStartDate(),
 				visibility.collectionEndDate(),
-				visibility.endDate());
+				visibility.endDate(),
+				visibility.useLetterCommunication());
 	}
 }
diff --git a/src/main/resources/db/dataset/reinit-test-data.sql b/src/main/resources/db/dataset/reinit-test-data.sql
index c86568a2..312d70dc 100644
--- a/src/main/resources/db/dataset/reinit-test-data.sql
+++ b/src/main/resources/db/dataset/reinit-test-data.sql
@@ -116,7 +116,7 @@ INSERT INTO visibility (
 ) VALUES
     ('OU-NORTH', 'SIMPSONS2020X00',1721903754305, 1719225354304, 1724582154306, 1719138954303, 1719052554302, 1718966154301, true),
     ('OU-SOUTH', 'SIMPSONS2020X00',1721903754315, 1719225354314, 1724582154316, 1719138954310, 1719052554309, 1718966154308, false),
-    ('OU-NORTH', 'VQS2021X00',1721903754308, 1719225354308, 1724582154308, 1719138954308, 1719052554308, 1718966154308, true),
+    ('OU-NORTH', 'VQS2021X00',1721903754308, 1719225354308, 1724582154308, 1719138954308, 1719052554308, 1718966154308, false),
     ('OU-SOUTH', 'VQS2021X00',1721903754308, 1719225354308, 1724582154308, 1719138954308, 1719052554308, 1718966154308, true),
     ('OU-SOUTH', 'XCLOSEDX00',1719052554308, 1718966154308, 1719225354308, 1718879754308, 1718789354308, 1718706954308, true),
     ('OU-SOUTH', 'ZCLOSEDX00',1719052554308, 1718966154308, 1719225354308, 1718879754308, 1718789354308, 1718706954308, true),
diff --git a/src/test/java/fr/insee/pearljam/integration/surveyunit/SurveyUnitIT.java b/src/test/java/fr/insee/pearljam/integration/surveyunit/SurveyUnitIT.java
index 74df6729..3bf45240 100644
--- a/src/test/java/fr/insee/pearljam/integration/surveyunit/SurveyUnitIT.java
+++ b/src/test/java/fr/insee/pearljam/integration/surveyunit/SurveyUnitIT.java
@@ -70,7 +70,8 @@ void testGetAllSurveyUnits() throws Exception {
                   "endDate":1724582154306,
                   "identificationConfiguration":"IASCO",
                   "contactOutcomeConfiguration":"F2F",
-                  "contactAttemptConfiguration":"F2F"
+                  "contactAttemptConfiguration":"F2F",
+                  "useLetterCommunication": true
                },
                {
                   "id":"12",
@@ -84,7 +85,8 @@ void testGetAllSurveyUnits() throws Exception {
                   "endDate":1724582154306,
                   "identificationConfiguration":"IASCO",
                   "contactOutcomeConfiguration":"F2F",
-                  "contactAttemptConfiguration":"F2F"
+                  "contactAttemptConfiguration":"F2F",
+                  "useLetterCommunication": true
                },
                {
                   "id":"20",
@@ -98,7 +100,8 @@ void testGetAllSurveyUnits() throws Exception {
                   "endDate":1724582154308,
                   "identificationConfiguration":"IASCO",
                   "contactOutcomeConfiguration":"TEL",
-                  "contactAttemptConfiguration":"TEL"
+                  "contactAttemptConfiguration":"TEL",
+                  "useLetterCommunication": false
                }
             ]
         """;
@@ -387,7 +390,7 @@ void testPutSurveyUnitDetail() throws Exception {
             },
             "communicationRequests":[
                {
-                  "communicationTemplateId":4,
+                  "communicationTemplateId":5,
                   "reason":"REFUSAL",
                   "creationTimestamp": 1721903754305
                },
@@ -499,7 +502,7 @@ void testPutSurveyUnitDetail() throws Exception {
              },
              "communicationRequests":[
                 {
-                   "communicationTemplateId":4,
+                   "communicationTemplateId":5,
                    "reason":"REFUSAL",
                    "emitter":"INTERVIEWER",
                    "status":[