diff --git a/apps/dnet-exporter-api/src/main/java/eu/dnetlib/openaire/community/CommunityApiController.java b/apps/dnet-exporter-api/src/main/java/eu/dnetlib/openaire/community/CommunityApiController.java
index d251b2d6..6a030010 100644
--- a/apps/dnet-exporter-api/src/main/java/eu/dnetlib/openaire/community/CommunityApiController.java
+++ b/apps/dnet-exporter-api/src/main/java/eu/dnetlib/openaire/community/CommunityApiController.java
@@ -301,7 +301,7 @@ public class CommunityApiController extends AbstractExporterController {
 		try {
 			communityService.addCommunitySubjects(ObjectUtils.firstNonNull(subCommunityId, id), subjects);
 
-			return subCommunityId != null ? communityService.getSubCommunities(subCommunityId) : getCommunity(id);
+			return subCommunityId != null ? communityService.getSubCommunity(id, subCommunityId) : getCommunity(id);
 		} catch (final ResourceNotFoundException e) {
 			throw e;
 		} catch (final Throwable e) {
@@ -330,7 +330,7 @@ public class CommunityApiController extends AbstractExporterController {
 		try {
 			communityService.removeCommunitySubjects(ObjectUtils.firstNonNull(subCommunityId, id), subjects);
 
-			return subCommunityId != null ? communityService.getSubCommunities(subCommunityId) : getCommunity(id);
+			return subCommunityId != null ? communityService.getSubCommunity(id, subCommunityId) : getCommunity(id);
 		} catch (final ResourceNotFoundException e) {
 			throw e;
 		} catch (final Throwable e) {
@@ -359,7 +359,7 @@ public class CommunityApiController extends AbstractExporterController {
 		try {
 			communityService.addCommunityFOS(ObjectUtils.firstNonNull(subCommunityId, id), subjects);
 
-			return subCommunityId != null ? communityService.getSubCommunities(subCommunityId) : getCommunity(id);
+			return subCommunityId != null ? communityService.getSubCommunity(id, subCommunityId) : getCommunity(id);
 		} catch (final ResourceNotFoundException e) {
 			throw e;
 		} catch (final Throwable e) {
@@ -388,7 +388,7 @@ public class CommunityApiController extends AbstractExporterController {
 		try {
 			communityService.removeCommunityFOS(ObjectUtils.firstNonNull(subCommunityId, id), subjects);
 
-			return subCommunityId != null ? communityService.getSubCommunities(subCommunityId) : getCommunity(id);
+			return subCommunityId != null ? communityService.getSubCommunity(id, subCommunityId) : getCommunity(id);
 		} catch (final ResourceNotFoundException e) {
 			throw e;
 		} catch (final Throwable e) {
@@ -417,7 +417,7 @@ public class CommunityApiController extends AbstractExporterController {
 		try {
 			communityService.addCommunitySDG(ObjectUtils.firstNonNull(subCommunityId, id), subjects);
 
-			return subCommunityId != null ? communityService.getSubCommunities(subCommunityId) : getCommunity(id);
+			return subCommunityId != null ? communityService.getSubCommunity(id, subCommunityId) : getCommunity(id);
 		} catch (final ResourceNotFoundException e) {
 			throw e;
 		} catch (final Throwable e) {
@@ -446,7 +446,7 @@ public class CommunityApiController extends AbstractExporterController {
 		try {
 			communityService.removeCommunitySDG(ObjectUtils.firstNonNull(subCommunityId, id), subjects);
 
-			return subCommunityId != null ? communityService.getSubCommunities(subCommunityId) : getCommunity(id);
+			return subCommunityId != null ? communityService.getSubCommunity(id, subCommunityId) : getCommunity(id);
 		} catch (final ResourceNotFoundException e) {
 			throw e;
 		} catch (final Throwable e) {
@@ -475,7 +475,7 @@ public class CommunityApiController extends AbstractExporterController {
 		try {
 			communityService.addCommunityAdvancedConstraint(ObjectUtils.firstNonNull(subCommunityId, id), advancedConstraint);
 
-			return subCommunityId != null ? communityService.getSubCommunities(subCommunityId) : getCommunity(id);
+			return subCommunityId != null ? communityService.getSubCommunity(id, subCommunityId) : getCommunity(id);
 		} catch (final ResourceNotFoundException e) {
 			throw e;
 		} catch (final Throwable e) {
@@ -503,7 +503,7 @@ public class CommunityApiController extends AbstractExporterController {
 		try {
 			communityService.removeCommunityAdvancedConstraint(ObjectUtils.firstNonNull(subCommunityId, id));
 
-			return subCommunityId != null ? communityService.getSubCommunities(subCommunityId) : getCommunity(id);
+			return subCommunityId != null ? communityService.getSubCommunity(id, subCommunityId) : getCommunity(id);
 		} catch (final ResourceNotFoundException e) {
 			throw e;
 		} catch (final Throwable e) {
@@ -532,7 +532,7 @@ public class CommunityApiController extends AbstractExporterController {
 		try {
 			communityService.addCommunityRemoveConstraint(ObjectUtils.firstNonNull(subCommunityId, id), removeConstraint);
 
-			return subCommunityId != null ? communityService.getSubCommunities(subCommunityId) : getCommunity(id);
+			return subCommunityId != null ? communityService.getSubCommunity(id, subCommunityId) : getCommunity(id);
 		} catch (final ResourceNotFoundException e) {
 			throw e;
 		} catch (final Throwable e) {
@@ -559,7 +559,7 @@ public class CommunityApiController extends AbstractExporterController {
 		try {
 			communityService.removeCommunityRemoveConstraint(ObjectUtils.firstNonNull(subCommunityId, id));
 
-			return subCommunityId != null ? communityService.getSubCommunities(subCommunityId) : getCommunity(id);
+			return subCommunityId != null ? communityService.getSubCommunity(id, subCommunityId) : getCommunity(id);
 		} catch (final ResourceNotFoundException e) {
 			throw e;
 		} catch (final Throwable e) {
@@ -589,7 +589,7 @@ public class CommunityApiController extends AbstractExporterController {
 		try {
 			communityService.addCommunityZenodoCommunity(ObjectUtils.firstNonNull(subCommunityId, id), zenodocommunity, main);
 
-			return subCommunityId != null ? communityService.getSubCommunities(subCommunityId) : getCommunity(id);
+			return subCommunityId != null ? communityService.getSubCommunity(id, subCommunityId) : getCommunity(id);
 		} catch (final ResourceNotFoundException e) {
 			throw e;
 		} catch (final Throwable e) {
@@ -619,7 +619,7 @@ public class CommunityApiController extends AbstractExporterController {
 		try {
 			communityService.removeCommunityZenodoCommunity(ObjectUtils.firstNonNull(subCommunityId, id), zenodocommunity, main);
 
-			return subCommunityId != null ? communityService.getSubCommunities(subCommunityId) : getCommunity(id);
+			return subCommunityId != null ? communityService.getSubCommunity(id, subCommunityId) : getCommunity(id);
 		} catch (final ResourceNotFoundException e) {
 			throw e;
 		} catch (final Throwable e) {