diff --git a/persistence-service-v1/persistence-service-external-api-impl-v1/src/main/java/com/iqser/red/persistence/service/v1/external/api/impl/controller/ImageSimilaritySearchController.java b/persistence-service-v1/persistence-service-external-api-impl-v1/src/main/java/com/iqser/red/persistence/service/v1/external/api/impl/controller/ImageSimilaritySearchController.java
index 36f3f1bd0..92b6b939e 100644
--- a/persistence-service-v1/persistence-service-external-api-impl-v1/src/main/java/com/iqser/red/persistence/service/v1/external/api/impl/controller/ImageSimilaritySearchController.java
+++ b/persistence-service-v1/persistence-service-external-api-impl-v1/src/main/java/com/iqser/red/persistence/service/v1/external/api/impl/controller/ImageSimilaritySearchController.java
@@ -34,6 +34,14 @@ public class ImageSimilaritySearchController implements ImageSimilaritySearchRes
     public ResponseEntity<ImageSimilaritySearchResponse> getSimilarImages(@RequestBody ImageSimilaritySearchRequest imageSimilaritySearchRequest) {
 
         log.info("received similiar image search request {}", imageSimilaritySearchRequest);
+        if (imageSimilaritySearchRequest.getAnnotationId() == null || imageSimilaritySearchRequest.getScope() == null || (imageSimilaritySearchRequest.getScope().getFileId()
+                                                                                                                          == null
+                                                                                                                          && imageSimilaritySearchRequest.getScope().getTemplateId()
+                                                                                                                             == null
+                                                                                                                          && imageSimilaritySearchRequest.getScope().getDossierId()
+                                                                                                                             == null)) {
+            return new ResponseEntity<>(null, HttpStatus.BAD_REQUEST);
+        }
         List<ImageDocument> similarImages = this.imageSimilarityService.findSimilarImages(imageSimilaritySearchRequest.getAnnotationId(),
                                                                                           imageSimilaritySearchRequest.getDistance(),
                                                                                           imageSimilaritySearchRequest.getScope());
diff --git a/persistence-service-v1/persistence-service-external-api-v1/src/main/java/com/iqser/red/service/persistence/service/v1/api/external/resource/ImageSimilaritySearchResource.java b/persistence-service-v1/persistence-service-external-api-v1/src/main/java/com/iqser/red/service/persistence/service/v1/api/external/resource/ImageSimilaritySearchResource.java
index a8795cdf3..3a0267c54 100644
--- a/persistence-service-v1/persistence-service-external-api-v1/src/main/java/com/iqser/red/service/persistence/service/v1/api/external/resource/ImageSimilaritySearchResource.java
+++ b/persistence-service-v1/persistence-service-external-api-v1/src/main/java/com/iqser/red/service/persistence/service/v1/api/external/resource/ImageSimilaritySearchResource.java
@@ -21,7 +21,7 @@ public interface ImageSimilaritySearchResource {
 
     @ResponseStatus(value = HttpStatus.OK)
     @Operation(summary = "Gets similiar images to given image", description = "None")
-    @ApiResponses(value = {@ApiResponse(responseCode = "200", description = "OK"), @ApiResponse(responseCode = "404", description = "Not found")})
+    @ApiResponses(value = {@ApiResponse(responseCode = "200", description = "OK"), @ApiResponse(responseCode = "404", description = "Not found"), @ApiResponse(responseCode = "400", description = "Bad request: missing parameter")})
     @PostMapping(value = IMAGE_SIMILARITY_SEARCH_PATH, produces = MediaType.APPLICATION_JSON_VALUE)
     ResponseEntity<ImageSimilaritySearchResponse> getSimilarImages(@RequestBody ImageSimilaritySearchRequest imageSimilaritySearchRequest);
 
diff --git a/persistence-service-v1/persistence-service-processor-v1/src/main/java/com/iqser/red/service/persistence/management/v1/processor/roles/ActionRoles.java b/persistence-service-v1/persistence-service-processor-v1/src/main/java/com/iqser/red/service/persistence/management/v1/processor/roles/ActionRoles.java
index 02f30c55d..1ac40b07f 100644
--- a/persistence-service-v1/persistence-service-processor-v1/src/main/java/com/iqser/red/service/persistence/management/v1/processor/roles/ActionRoles.java
+++ b/persistence-service-v1/persistence-service-processor-v1/src/main/java/com/iqser/red/service/persistence/management/v1/processor/roles/ActionRoles.java
@@ -59,9 +59,9 @@ public final class ActionRoles {
     public static final String READ_GENERAL_CONFIGURATION = "red-read-general-configuration";
     public static final String WRITE_GENERAL_CONFIGURATION = "red-write-general-configuration";
 
-    // IMAGE SIMILIARITY SEARCH
+    // IMAGE SIMILARITY SEARCH
 
-    public static final String GET_SIMILAR_IMAGES = "red-get-similiar-images";
+    public static final String GET_SIMILAR_IMAGES = "red-get-similar-images";
 
     // Preferences
     public static final String MANAGE_USER_PREFERENCES = "red-manage-user-preferences";
diff --git a/persistence-service-v1/persistence-service-processor-v1/src/main/java/com/iqser/red/service/persistence/management/v1/processor/roles/ApplicationRoles.java b/persistence-service-v1/persistence-service-processor-v1/src/main/java/com/iqser/red/service/persistence/management/v1/processor/roles/ApplicationRoles.java
index b97aa37aa..e1de6153c 100644
--- a/persistence-service-v1/persistence-service-processor-v1/src/main/java/com/iqser/red/service/persistence/management/v1/processor/roles/ApplicationRoles.java
+++ b/persistence-service-v1/persistence-service-processor-v1/src/main/java/com/iqser/red/service/persistence/management/v1/processor/roles/ApplicationRoles.java
@@ -32,6 +32,7 @@ import static com.iqser.red.service.persistence.management.v1.processor.roles.Ac
 import static com.iqser.red.service.persistence.management.v1.processor.roles.ActionRoles.GET_HIGHLIGHTS;
 import static com.iqser.red.service.persistence.management.v1.processor.roles.ActionRoles.GET_REPORT_TEMPLATES;
 import static com.iqser.red.service.persistence.management.v1.processor.roles.ActionRoles.GET_RSS;
+import static com.iqser.red.service.persistence.management.v1.processor.roles.ActionRoles.GET_SIMILAR_IMAGES;
 import static com.iqser.red.service.persistence.management.v1.processor.roles.ActionRoles.GET_TENANTS;
 import static com.iqser.red.service.persistence.management.v1.processor.roles.ActionRoles.IMPORT_FILES;
 import static com.iqser.red.service.persistence.management.v1.processor.roles.ActionRoles.MANAGE_ACL_PERMISSIONS;
@@ -149,8 +150,7 @@ public final class ApplicationRoles {
                                                                             DOWNLOAD_REDACTION_PREVIEW_FILE,
                                                                             DOWNLOAD_REPORT_TEMPLATE,
                                                                             EXCLUDE_INCLUDE_FILE,
-                                                                            EXCLUDE_INCLUDE_PAGES,
-                                                                            GET_REPORT_TEMPLATES,
+                                                                            EXCLUDE_INCLUDE_PAGES, GET_REPORT_TEMPLATES, GET_SIMILAR_IMAGES,
                                                                             MANAGE_USER_PREFERENCES,
                                                                             MANAGE_VIEWED_PAGES,
                                                                             PROCESS_DOWNLOAD,
@@ -201,8 +201,7 @@ public final class ApplicationRoles {
                                                                              DELETE_DICTIONARY_TYPE,
                                                                              DELETE_REPORT_TEMPLATE,
                                                                              DOWNLOAD_REPORT_TEMPLATE,
-                                                                             GET_REPORT_TEMPLATES,
-                                                                             MANAGE_USER_PREFERENCES,
+                                                                             GET_REPORT_TEMPLATES, MANAGE_USER_PREFERENCES, GET_SIMILAR_IMAGES,
                                                                              READ_COLORS,
                                                                              READ_DICTIONARY_TYPES,
                                                                              READ_DIGITAL_SIGNATURE,
@@ -242,8 +241,7 @@ public final class ApplicationRoles {
     public static final Set<String> RED_USER_ADMIN_ACTION_ROLES = Sets.newHashSet(MANAGE_USER_PREFERENCES,
                                                                                   READ_ALL_USERS,
                                                                                   READ_APP_CONFIG,
-                                                                                  READ_GENERAL_CONFIGURATION,
-                                                                                  READ_GENERAL_CONFIGURATION,
+                                                                                  READ_GENERAL_CONFIGURATION, READ_GENERAL_CONFIGURATION, GET_SIMILAR_IMAGES,
                                                                                   READ_NOTIFICATIONS,
                                                                                   READ_USERS,
                                                                                   UPDATE_MY_PROFILE,