diff --git a/src/main/java/fr/insee/genesis/configuration/MongoConfiguration.java b/src/main/java/fr/insee/genesis/configuration/MongoConfiguration.java
new file mode 100644
index 00000000..1779b37e
--- /dev/null
+++ b/src/main/java/fr/insee/genesis/configuration/MongoConfiguration.java
@@ -0,0 +1,19 @@
+package fr.insee.genesis.configuration;
+
+import lombok.NonNull;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.mongodb.config.AbstractMongoClientConfiguration;
+
+@Configuration
+public class MongoConfiguration extends AbstractMongoClientConfiguration {
+    @Override
+    @NonNull
+    protected String getDatabaseName() {
+        return "CollectedDataRepository";
+    }
+
+    @Override
+    public boolean autoIndexCreation() {
+        return true;
+    }
+}
diff --git a/src/main/java/fr/insee/genesis/infrastructure/document/surveyunit/SurveyUnitDocument.java b/src/main/java/fr/insee/genesis/infrastructure/document/surveyunit/SurveyUnitDocument.java
index 1589c5cf..f4b0f562 100644
--- a/src/main/java/fr/insee/genesis/infrastructure/document/surveyunit/SurveyUnitDocument.java
+++ b/src/main/java/fr/insee/genesis/infrastructure/document/surveyunit/SurveyUnitDocument.java
@@ -2,6 +2,7 @@
 
 import fr.insee.genesis.Constants;
 import lombok.Data;
+import org.springframework.data.mongodb.core.index.CompoundIndex;
 import org.springframework.data.mongodb.core.mapping.Document;
 
 import java.time.LocalDateTime;
@@ -9,6 +10,9 @@
 
 @Data
 @Document(collection = Constants.MONGODB_RESPONSE_COLLECTION_NAME)
+@CompoundIndex(name = "idCampaign_1_idQuestionnaire_1", def = "{'idCampaign': 1, 'idQuestionnaire': 1}") //1 = ascending, -1 = descending
+@CompoundIndex(name = "idQuestionnaire_1_idCampaign_1", def = "{'idQuestionnaire': 1, 'idCampaign': 1}")
+@CompoundIndex(name = "idQuestionnaire_1_idUE_1", def = "{'idQuestionnaire': 1, 'idUE': 1}")
 public class SurveyUnitDocument {
 	private String idCampaign;
 	private String idUE;