diff --git a/src/main/java/org/gridsuite/study/server/StudyConstants.java b/src/main/java/org/gridsuite/study/server/StudyConstants.java
index 9c4676cfb..d2cfdc865 100644
--- a/src/main/java/org/gridsuite/study/server/StudyConstants.java
+++ b/src/main/java/org/gridsuite/study/server/StudyConstants.java
@@ -78,7 +78,6 @@ private StudyConstants() {
     public static final String REPORT_UUID = "reportUuid";
     public static final String UUIDS = "uuids";
     public static final String IDS = "ids";
-    public static final String QUERY_PARAM_ERROR_ON_GROUP_NOT_FOUND = "errorOnGroupNotFound";
     public static final String QUERY_PARAM_REPORT_DEFAULT_NAME = "defaultName";
     public static final String QUERY_PARAM_REPORT_SEVERITY_LEVEL = "severityLevels";
     public static final String QUERY_PARAM_MESSAGE_FILTER = "message";
diff --git a/src/main/java/org/gridsuite/study/server/service/NetworkModificationService.java b/src/main/java/org/gridsuite/study/server/service/NetworkModificationService.java
index 01a4b9c1d..283fd336e 100644
--- a/src/main/java/org/gridsuite/study/server/service/NetworkModificationService.java
+++ b/src/main/java/org/gridsuite/study/server/service/NetworkModificationService.java
@@ -47,6 +47,8 @@ public class NetworkModificationService {
     private static final String COMPOSITE_PATH = "network-composite-modifications" + DELIMITER;
     private static final String GROUPS = "groups";
     private static final String GROUP_PATH = GROUPS + DELIMITER + "{groupUuid}";
+    private static final String CONTAINERS = "containers";
+    private static final String CONTAINER_PATH = CONTAINERS + DELIMITER + "{containerUuid}";
     private static final String NETWORK_MODIFICATIONS_PATH = "network-modifications";
     private static final String NETWORK_MODIFICATIONS_COUNT_PATH = "network-modifications-count";
     private static final String QUERY_PARAM_ACTION = "action";
@@ -108,7 +110,7 @@ public String getLineTypeWithLimits(UUID lineTypeUuid, String area, String tempe
     }
 
     public String getNetworkModificationsFromComposite(List<UUID> compositeModificationUuids, boolean onlyMetadata) {
-        String path = UriComponentsBuilder.fromPath(COMPOSITE_PATH + NETWORK_MODIFICATIONS_PATH)
+        String path = UriComponentsBuilder.fromPath(CONTAINERS + DELIMITER + NETWORK_MODIFICATIONS_PATH)
             .queryParam(UUIDS, compositeModificationUuids)
             .queryParam("onlyMetadata", onlyMetadata)
             .build().toUriString();
@@ -148,8 +150,7 @@ public void updateNetworkModificationsMetadata(List<UUID> networkModificationUui
 
     public String getModifications(UUID groupUUid, boolean stashedModifications, boolean onlyMetadata) {
         Objects.requireNonNull(groupUUid);
-        var path = UriComponentsBuilder.fromPath(GROUP_PATH + DELIMITER + NETWORK_MODIFICATIONS_PATH)
-            .queryParam(QUERY_PARAM_ERROR_ON_GROUP_NOT_FOUND, false)
+        var path = UriComponentsBuilder.fromPath(CONTAINER_PATH + DELIMITER + NETWORK_MODIFICATIONS_PATH)
             .queryParam(QUERY_PARAM_ONLY_STASHED, stashedModifications)
             .queryParam("onlyMetadata", onlyMetadata)
             .buildAndExpand(groupUUid)
@@ -160,8 +161,7 @@ public String getModifications(UUID groupUUid, boolean stashedModifications, boo
 
     public String getModificationsToExport(UUID groupUUid) {
         Objects.requireNonNull(groupUUid);
-        var path = UriComponentsBuilder.fromPath(GROUP_PATH + DELIMITER + NETWORK_MODIFICATIONS_PATH + DELIMITER + "export")
-            .queryParam(QUERY_PARAM_ERROR_ON_GROUP_NOT_FOUND, false)
+        var path = UriComponentsBuilder.fromPath(CONTAINER_PATH + DELIMITER + NETWORK_MODIFICATIONS_PATH + DELIMITER + "export")
             .buildAndExpand(groupUUid)
             .toUriString();
 
@@ -170,7 +170,7 @@ public String getModificationsToExport(UUID groupUUid) {
 
     public Integer getModificationsCount(UUID groupUUid, boolean stashedModifications) {
         Objects.requireNonNull(groupUUid);
-        var path = UriComponentsBuilder.fromPath(GROUP_PATH + DELIMITER + NETWORK_MODIFICATIONS_COUNT_PATH)
+        var path = UriComponentsBuilder.fromPath(CONTAINER_PATH + DELIMITER + NETWORK_MODIFICATIONS_COUNT_PATH)
             .queryParam(QUERY_PARAM_STASHED, stashedModifications)
             .buildAndExpand(groupUUid)
             .toUriString();
@@ -181,7 +181,6 @@ public Integer getModificationsCount(UUID groupUUid, boolean stashedModification
     public void deleteModifications(UUID groupUUid) {
         Objects.requireNonNull(groupUUid);
         var path = UriComponentsBuilder.fromPath(GROUP_PATH)
-            .queryParam(QUERY_PARAM_ERROR_ON_GROUP_NOT_FOUND, false)
             .buildAndExpand(groupUUid)
             .toUriString();
 
@@ -197,7 +196,6 @@ public void deleteModificationsGroups(List<UUID> groupUuids) {
         headers.setContentType(MediaType.APPLICATION_JSON);
         HttpEntity<String> httpEntity = new HttpEntity<>(toJson(groupUuids), headers);
         var path = UriComponentsBuilder.fromPath(GROUPS)
-                .queryParam(QUERY_PARAM_ERROR_ON_GROUP_NOT_FOUND, false)
                 .toUriString();
 
         restTemplate.exchange(getNetworkModificationServerURI(false) + path,
@@ -363,7 +361,7 @@ public Map<UUID, UUID> findParentComposites(List<UUID> modificationsUuids) {
 
     public List<ModificationReference> getModificationReferences(UUID groupUuid) {
         Objects.requireNonNull(groupUuid);
-        var path = UriComponentsBuilder.fromPath(GROUP_PATH + DELIMITER + "references");
+        var path = UriComponentsBuilder.fromPath(CONTAINER_PATH + DELIMITER + "references");
 
         HttpHeaders headers = new HttpHeaders();
         headers.setContentType(MediaType.APPLICATION_JSON);
@@ -628,7 +626,6 @@ public void deleteStashedModificationsFromGroups(List<UUID> groupUuids, String u
         headers.set(HEADER_USER_ID, userId);
         HttpEntity<String> httpEntity = new HttpEntity<>(toJson(groupUuids), headers);
         var path = UriComponentsBuilder.fromPath(GROUPS + "/stashed-modifications")
-                .queryParam(QUERY_PARAM_ERROR_ON_GROUP_NOT_FOUND, false)
                 .toUriString();
 
         restTemplate.exchange(getNetworkModificationServerURI(false) + path,
@@ -640,7 +637,6 @@ public void deleteStashedModificationsFromGroups(List<UUID> groupUuids, String u
     public void restoreElementReferences(UUID groupUUid, UUID studyUuid, UUID newNodeUuid, String userId) {
         Objects.requireNonNull(groupUUid);
         var path = UriComponentsBuilder.fromPath(GROUP_PATH + "/references")
-                .queryParam(QUERY_PARAM_ERROR_ON_GROUP_NOT_FOUND, false)
                 .queryParam(QUERY_PARAM_NODE_CONTAINER_UUID, newNodeUuid)
                 .queryParam(QUERY_PARAM_STUDY_ROOT_CONTAINER_UUID, studyUuid)
                 .buildAndExpand(groupUUid)
@@ -655,7 +651,7 @@ public void restoreElementReferences(UUID groupUUid, UUID studyUuid, UUID newNod
     }
 
     public void verifyModifications(UUID groupUuid, Set<UUID> modificationUuids) {
-        var path = UriComponentsBuilder.fromPath(GROUP_PATH + DELIMITER + NETWORK_MODIFICATIONS_PATH + DELIMITER + "verify")
+        var path = UriComponentsBuilder.fromPath(CONTAINER_PATH + DELIMITER + NETWORK_MODIFICATIONS_PATH + DELIMITER + "verify")
             .queryParam("uuids", modificationUuids)
             .buildAndExpand(groupUuid)
             .toUriString();
@@ -724,7 +720,7 @@ public List<UUID> findAllChildrenUuids(List<UUID> compositeUuids) {
     }
 
     public boolean hasModificationReferences(List<UUID> containerUuids) {
-        String path = UriComponentsBuilder.fromPath("containers/references/exists")
+        String path = UriComponentsBuilder.fromPath(CONTAINERS + DELIMITER + "references/exists")
                 .queryParam(UUIDS, containerUuids)
                 .build().toUriString();
         return Boolean.TRUE.equals(restTemplate.getForObject(getNetworkModificationServerURI(false) + path, Boolean.class));
@@ -738,7 +734,7 @@ public void assertReferencedModificationsAreWritable(List<UUID> containerUuids,
         if (containerUuids.isEmpty()) {
             return;
         }
-        String path = UriComponentsBuilder.fromPath("containers/references/authorized")
+        String path = UriComponentsBuilder.fromPath(CONTAINERS + DELIMITER + "references/authorized")
                 .queryParam(UUIDS, containerUuids)
                 .build().toUriString();
 
diff --git a/src/test/java/org/gridsuite/study/server/NetworkModificationTest.java b/src/test/java/org/gridsuite/study/server/NetworkModificationTest.java
index ee394f972..f7f525dd0 100644
--- a/src/test/java/org/gridsuite/study/server/NetworkModificationTest.java
+++ b/src/test/java/org/gridsuite/study/server/NetworkModificationTest.java
@@ -3618,7 +3618,7 @@ void testUpdateNetworkModificationsActivationOnReference() throws Exception {
 
         // Stub verifyModifications
         wireMockServer.stubFor(WireMock.get(WireMock.urlPathEqualTo(
-                        "/v1/groups/" + node.getModificationGroupUuid() + "/network-modifications/verify"))
+                        "/v1/containers/" + node.getModificationGroupUuid() + "/network-modifications/verify"))
                 .willReturn(WireMock.ok()));
 
         // Stub the references lookup (network-modification-server wire names): the modification is a reference, so a
@@ -3650,7 +3650,7 @@ void testUpdateNetworkModificationsActivationOnReference() throws Exception {
 
         // Verify that verifyModifications was called with the composite UUID
         WireMockUtilsCriteria.verifyGetRequest(wireMockServer,
-                "/v1/groups/" + node.getModificationGroupUuid() + "/network-modifications/verify",
+                "/v1/containers/" + node.getModificationGroupUuid() + "/network-modifications/verify",
                 Map.of("uuids", equalTo(compositeUuid.toString())));
 
         // the references are looked up to check the rights on the shared modifications, if any
diff --git a/src/test/java/org/gridsuite/study/server/NetworkModificationTreeTest.java b/src/test/java/org/gridsuite/study/server/NetworkModificationTreeTest.java
index b1bf0489a..ae2f9792f 100644
--- a/src/test/java/org/gridsuite/study/server/NetworkModificationTreeTest.java
+++ b/src/test/java/org/gridsuite/study/server/NetworkModificationTreeTest.java
@@ -300,7 +300,7 @@ public MockResponse dispatch(RecordedRequest request) {
                             Headers.of(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_VALUE),
                             "{}"
                     );
-                } else if (path.matches("/v1/groups/.*/references") && Objects.equals(request.getMethod(), "GET")) {
+                } else if (path.matches("/v1/containers/.*/references") && Objects.equals(request.getMethod(), "GET")) {
                     return new MockResponse(
                             HttpStatus.OK.value(),
                             Headers.of(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_VALUE),
@@ -308,20 +308,20 @@ public MockResponse dispatch(RecordedRequest request) {
                     );
                 } else if (path.matches("/v1/network-modifications.*")) {
                     return new MockResponse(HttpStatus.OK.value());
-                } else if (path.matches("/v1/groups/" + MODIFICATION_GROUP_UUID + "/network-modifications-count.*") && request.getMethod().equals("GET")) {
+                } else if (path.matches("/v1/containers/" + MODIFICATION_GROUP_UUID + "/network-modifications-count.*") && request.getMethod().equals("GET")) {
                     return new MockResponse(HttpStatus.OK.value(), Headers.of(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_VALUE), objectMapper.writeValueAsString(0));
-                } else if (path.matches("/v1/groups/" + MODIFICATION_GROUP_UUID_2 + "/network-modifications-count.*") && request.getMethod().equals("GET")) {
+                } else if (path.matches("/v1/containers/" + MODIFICATION_GROUP_UUID_2 + "/network-modifications-count.*") && request.getMethod().equals("GET")) {
                     return new MockResponse(HttpStatus.OK.value(), Headers.of(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_VALUE), objectMapper.writeValueAsString(2));
-                } else if (path.matches("/v1/groups/" + MODIFICATION_GROUP_UUID_3 + "/network-modifications-count.*") && request.getMethod().equals("GET")) {
+                } else if (path.matches("/v1/containers/" + MODIFICATION_GROUP_UUID_3 + "/network-modifications-count.*") && request.getMethod().equals("GET")) {
                     return new MockResponse(HttpStatus.OK.value(), Headers.of(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_VALUE), objectMapper.writeValueAsString(0));
-                } else if (path.startsWith("/v1/groups/") && path.contains("/network-modifications-count") && Objects.equals(request.getMethod(), "GET")) {
+                } else if (path.startsWith("/v1/containers/") && path.contains("/network-modifications-count") && Objects.equals(request.getMethod(), "GET")) {
                     // by default nodes contain no modifications
                     return new MockResponse(HttpStatus.OK.value(), Headers.of(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_VALUE), objectMapper.writeValueAsString(0));
-                } else if (path.matches("/v1/groups/" + MODIFICATION_GROUP_UUID + "/.*") && request.getMethod().equals("GET")) {
+                } else if (path.matches("/v1/containers/" + MODIFICATION_GROUP_UUID + "/.*") && request.getMethod().equals("GET")) {
                     return new MockResponse(HttpStatus.OK.value(), Headers.of(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_VALUE), objectMapper.writeValueAsString(List.of()));
-                } else if (path.matches("/v1/groups/" + MODIFICATION_GROUP_UUID_2 + "/.*") && request.getMethod().equals("GET")) {
+                } else if (path.matches("/v1/containers/" + MODIFICATION_GROUP_UUID_2 + "/.*") && request.getMethod().equals("GET")) {
                     return new MockResponse(HttpStatus.OK.value(), Headers.of(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_VALUE), objectMapper.writeValueAsString(List.of("S1", "S2")));
-                } else if (path.matches("/v1/groups/" + MODIFICATION_GROUP_UUID_3 + "/.*") && request.getMethod().equals("GET")) {
+                } else if (path.matches("/v1/containers/" + MODIFICATION_GROUP_UUID_3 + "/.*") && request.getMethod().equals("GET")) {
                     return new MockResponse(HttpStatus.OK.value(), Headers.of(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_VALUE), objectMapper.writeValueAsString(List.of()));
                 } else if (path.matches("/v1/groups/.*") && request.getMethod().equals("DELETE")) {
                     return new MockResponse(HttpStatus.OK.value());
diff --git a/src/test/java/org/gridsuite/study/server/VoltageInitTest.java b/src/test/java/org/gridsuite/study/server/VoltageInitTest.java
index 225de1acf..bbb79783d 100644
--- a/src/test/java/org/gridsuite/study/server/VoltageInitTest.java
+++ b/src/test/java/org/gridsuite/study/server/VoltageInitTest.java
@@ -365,7 +365,7 @@ public MockResponse dispatch(RecordedRequest request) {
                                     IdentifiableType.GENERATOR, "genId", Set.of("s1"));
                     return new MockResponse(200, Headers.of(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_VALUE),
                             objectMapper.writeValueAsString(new NetworkModificationsResult(List.of(VOLTAGE_INIT_MODIFICATION_UUID), List.of(networkModificationResult))));
-                } else if (path.matches("/v1/groups/" + MODIFICATIONS_GROUP_UUID + "/network-modifications\\?errorOnGroupNotFound=false&onlyStashed=false&onlyMetadata=.*")) {
+                } else if (path.matches("/v1/containers/" + MODIFICATIONS_GROUP_UUID + "/network-modifications\\?onlyStashed=false&onlyMetadata=.*")) {
                     return new MockResponse(200, Headers.of(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_VALUE), objectMapper.writeValueAsString(VOLTAGE_INIT_PREVIEW_MODIFICATION_LIST));
                 } else if (path.matches("/v1/results/" + VOLTAGE_INIT_RESULT_UUID + "/stop.*")
                         || path.matches("/v1/results/" + VOLTAGE_INIT_OTHER_NODE_RESULT_UUID + "/stop.*")) {
@@ -884,7 +884,7 @@ private void runVoltageInit(UUID studyUuid, UUID nodeUuuid, UUID rootNetworkUuid
         mockMvc.perform(get("/v1/studies/{studyUuid}/root-networks/{rootNetworkUuid}/nodes/{nodeUuid}/network-modifications/voltage-init", studyUuid, rootNetworkUuid, nodeUuuid)
             .header("userId", "userId")).andExpect(status().isOk());
         assertTrue(TestUtils.getRequestsDone(2, server).stream().allMatch(r ->
-            r.matches("/v1/groups/" + MODIFICATIONS_GROUP_UUID + "/network-modifications\\?errorOnGroupNotFound=false&onlyStashed=false&onlyMetadata=false") ||
+            r.matches("/v1/containers/" + MODIFICATIONS_GROUP_UUID + "/network-modifications\\?onlyStashed=false&onlyMetadata=false") ||
                 r.matches("/v1/results/" + VOLTAGE_INIT_RESULT_UUID + "/modifications-group-uuid")
         ));
     }
diff --git a/src/test/java/org/gridsuite/study/server/service/NetworkModificationServiceTest.java b/src/test/java/org/gridsuite/study/server/service/NetworkModificationServiceTest.java
index de5da3578..dc09125f5 100644
--- a/src/test/java/org/gridsuite/study/server/service/NetworkModificationServiceTest.java
+++ b/src/test/java/org/gridsuite/study/server/service/NetworkModificationServiceTest.java
@@ -83,7 +83,7 @@ void testGetLineTypeWithLimits() {
     void testGetNetworkModificationsFromComposite() {
         UUID firstUuid = UUID.randomUUID();
         UUID secondUuid = UUID.randomUUID();
-        String expectedUrl = NETWORK_MODIFICATION_SERVER_URI + "/v1/network-composite-modifications/network-modifications?uuids=" + firstUuid + "&uuids=" + secondUuid + "&onlyMetadata=false";
+        String expectedUrl = NETWORK_MODIFICATION_SERVER_URI + "/v1/containers/network-modifications?uuids=" + firstUuid + "&uuids=" + secondUuid + "&onlyMetadata=false";
         when(restTemplate.getForObject(expectedUrl, String.class)).thenReturn(RESPONSE);
 
         assertThat(networkModificationService.getNetworkModificationsFromComposite(List.of(firstUuid, secondUuid), false)).isEqualTo(RESPONSE);
@@ -135,7 +135,7 @@ void testUpdateNetworkModificationsMetadata() {
     void testDeleteModificationsGroups() {
         UUID firstUuid = UUID.randomUUID();
         UUID secondUuid = UUID.randomUUID();
-        String expectedUrl = NETWORK_MODIFICATION_SERVER_URI + "/v1/groups?errorOnGroupNotFound=false";
+        String expectedUrl = NETWORK_MODIFICATION_SERVER_URI + "/v1/groups";
 
         HttpHeaders headers = new HttpHeaders();
         headers.setContentType(MediaType.APPLICATION_JSON);
@@ -148,7 +148,7 @@ void testDeleteModificationsGroups() {
     void testDeleteStashedModificationsGroups() {
         UUID firstUuid = UUID.randomUUID();
         UUID secondUuid = UUID.randomUUID();
-        String expectedUrl = NETWORK_MODIFICATION_SERVER_URI + "/v1/groups/stashed-modifications?errorOnGroupNotFound=false";
+        String expectedUrl = NETWORK_MODIFICATION_SERVER_URI + "/v1/groups/stashed-modifications";
 
         HttpHeaders headers = new HttpHeaders();
         headers.setContentType(MediaType.APPLICATION_JSON);
@@ -194,7 +194,7 @@ void testFindParentComposites() {
     @Test
     void testGetReferencesFromGroup() {
         UUID groupUuid = UUID.randomUUID();
-        String expectedUrl = NETWORK_MODIFICATION_SERVER_URI + "/v1/groups/" + groupUuid + "/references";
+        String expectedUrl = NETWORK_MODIFICATION_SERVER_URI + "/v1/containers/" + groupUuid + "/references";
         List<ModificationReference> expected = List.of(new ModificationReference(UUID.randomUUID(), UUID.randomUUID(), UUID.randomUUID()));
         when(restTemplate.exchange(
                 eq(expectedUrl),
diff --git a/src/test/java/org/gridsuite/study/server/studycontroller/StudyTest.java b/src/test/java/org/gridsuite/study/server/studycontroller/StudyTest.java
index 944cc15bd..118aad0ed 100644
--- a/src/test/java/org/gridsuite/study/server/studycontroller/StudyTest.java
+++ b/src/test/java/org/gridsuite/study/server/studycontroller/StudyTest.java
@@ -254,7 +254,7 @@ void testDeleteStudy() throws Exception {
         assertTrue(studyRepository.findById(studyUuid).isEmpty());
 
         wireMockStubs.verifyGetReferencesDataFromGroup(stubReferencesUuid);
-        wireMockStubs.verifyNetworkModificationDeleteGroup(stubUuid, false);
+        wireMockStubs.verifyNetworkModificationDeleteGroup(stubUuid);
         wireMockStubs.caseServer.verifyDeleteCase(stubDeleteCaseId, CASE_UUID_STRING);
         deleteStudyStubs.verify(wireMockStubs, computationServerStubs, 10); // voltageInit, loadFlow, securityAnalysis, sensitivityAnalysis, stateEstimation, pccMin, dynamic, shortCircuit
     }
@@ -289,7 +289,7 @@ void testDeleteStudyWithError(final CapturedOutput capturedOutput) throws Except
         assertTrue(capturedOutput.getOut().contains(StudyServerExecutionService.class.getName() + " - " + CompletionException.class.getName() + ": " + InterruptedException.class.getName()));
 
         wireMockStubs.verifyGetReferencesDataFromGroup(stubReferencesUuid);
-        wireMockStubs.verifyNetworkModificationDeleteGroup(stubUuid, false);
+        wireMockStubs.verifyNetworkModificationDeleteGroup(stubUuid);
         deleteStudyStubs.verify(wireMockStubs, computationServerStubs, 3); // loadflow, security, sensitivity, stateEstimation, shortCircuit, pccMin
     }
 
@@ -317,7 +317,7 @@ void testDeleteStudyWithNonExistingCase() throws Exception {
         assertTrue(studyRepository.findById(studyUuid).isEmpty());
 
         wireMockStubs.verifyGetReferencesDataFromGroup(stubReferencesUuid);
-        wireMockStubs.verifyNetworkModificationDeleteGroup(stubUuid, false);
+        wireMockStubs.verifyNetworkModificationDeleteGroup(stubUuid);
         wireMockStubs.caseServer.verifyDeleteCase(stubDeleteCaseId, nonExistingCaseUuid.toString());
         deleteStudyStubs.verify(wireMockStubs, computationServerStubs, 10);
     }
diff --git a/src/test/java/org/gridsuite/study/server/utils/wiremock/WireMockStubs.java b/src/test/java/org/gridsuite/study/server/utils/wiremock/WireMockStubs.java
index f250757e1..e0c40e74e 100644
--- a/src/test/java/org/gridsuite/study/server/utils/wiremock/WireMockStubs.java
+++ b/src/test/java/org/gridsuite/study/server/utils/wiremock/WireMockStubs.java
@@ -44,6 +44,8 @@ public class WireMockStubs {
 
     private static final String URI_NETWORK_MODIFICATION_GROUPS = "/v1/groups";
 
+    private static final String URI_NETWORK_MODIFICATION_CONTAINERS = "/v1/containers";
+
     public static final String FIRST_VARIANT_ID = "first_variant_id";
 
     private final WireMockServer wireMock;
@@ -170,7 +172,7 @@ public void verifyNetworkElementsIdsPost(UUID stubUuid, String networkUuid, Stri
     }
 
     public UUID stubNetworkModificationCountGet(String groupUuid, Integer expectedCount) {
-        return wireMock.stubFor(WireMock.get(WireMock.urlPathMatching(URI_NETWORK_MODIFICATION_GROUPS + DELIMITER + groupUuid + "/network-modifications-count"))
+        return wireMock.stubFor(WireMock.get(WireMock.urlPathMatching(URI_NETWORK_MODIFICATION_CONTAINERS + DELIMITER + groupUuid + "/network-modifications-count"))
             .withQueryParam(QUERY_PARAM_STASHED, WireMock.equalTo("false"))
             .willReturn(WireMock.ok()
                 .withHeader(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_VALUE)
@@ -238,14 +240,14 @@ public UUID stubNetworkModificationDeleteGroup() {
     }
 
     public UUID stubGetAllReferencesDataFromGroup() {
-        return wireMock.stubFor(WireMock.get(WireMock.urlPathMatching(URI_NETWORK_MODIFICATION_GROUPS + DELIMITER + ".*/references"))
+        return wireMock.stubFor(WireMock.get(WireMock.urlPathMatching(URI_NETWORK_MODIFICATION_CONTAINERS + DELIMITER + ".*/references"))
                 .willReturn(WireMock.ok()
                         .withHeader(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_VALUE)
                         .withBody("[]"))).getId();
     }
 
     public void verifyGetReferencesDataFromGroup(UUID getReferencesUuid) {
-        verifyGetRequest(wireMock, getReferencesUuid, URI_NETWORK_MODIFICATION_GROUPS + DELIMITER + ".*/references", true, Map.of(), 1);
+        verifyGetRequest(wireMock, getReferencesUuid, URI_NETWORK_MODIFICATION_CONTAINERS + DELIMITER + ".*/references", true, Map.of(), 1);
     }
 
     public UUID stubNetworkModificationDeleteIndex() {
@@ -255,7 +257,7 @@ public UUID stubNetworkModificationDeleteIndex() {
     }
 
     public void verifyNetworkModificationCountsGet(UUID stubId, String groupUuid) {
-        verifyGetRequest(wireMock, stubId, URI_NETWORK_MODIFICATION_GROUPS + DELIMITER + groupUuid + "/network-modifications-count", Map.of(QUERY_PARAM_STASHED, WireMock.equalTo("false")));
+        verifyGetRequest(wireMock, stubId, URI_NETWORK_MODIFICATION_CONTAINERS + DELIMITER + groupUuid + "/network-modifications-count", Map.of(QUERY_PARAM_STASHED, WireMock.equalTo("false")));
     }
 
     public void verifyNetworkModificationPost(String requestBody) {
@@ -278,8 +280,8 @@ public void verifyDuplicateModificationGroup(UUID stubId, int nbRequests) {
         verifyPostRequest(wireMock, stubId, URI_NETWORK_MODIFICATION_GROUPS + "/.*/duplicate", true, Map.of("groupUuid", WireMock.matching(".*")), nbRequests);
     }
 
-    public void verifyNetworkModificationDeleteGroup(UUID stubId, boolean errorOnGroupNotFound) {
-        verifyDeleteRequest(wireMock, stubId, URI_NETWORK_MODIFICATION_GROUPS + DELIMITER + ".*", true, Map.of("errorOnGroupNotFound", WireMock.equalTo(String.valueOf(errorOnGroupNotFound))));
+    public void verifyNetworkModificationDeleteGroup(UUID stubId) {
+        verifyDeleteRequest(wireMock, stubId, URI_NETWORK_MODIFICATION_GROUPS + DELIMITER + ".*", true, Map.of());
     }
 
     public void verifyNetworkModificationDeleteIndex(UUID stubId) {