diff --git a/backend/openapi/components/parameters/next-page-token.yaml b/backend/openapi/components/parameters/next-page-token.yaml
index 5c86f32..18a096c 100644
--- a/backend/openapi/components/parameters/next-page-token.yaml
+++ b/backend/openapi/components/parameters/next-page-token.yaml
@@ -1,6 +1,6 @@
 name: nextPageToken
 in: query
 required: false
-description: The token to retrieve the next page of rooms.
+description: The token to retrieve the next page of elements.
 schema:
     type: string
diff --git a/backend/openapi/components/requestBodies/internal/participant-token-request.yaml b/backend/openapi/components/requestBodies/internal/participant-token-request.yaml
index cbdb434..cbbcf79 100644
--- a/backend/openapi/components/requestBodies/internal/participant-token-request.yaml
+++ b/backend/openapi/components/requestBodies/internal/participant-token-request.yaml
@@ -3,4 +3,4 @@ required: true
 content:
     application/json:
         schema:
-            $ref: '../../schemas/internal/meet-token-options.yaml'
+            $ref: '../../schemas/internal/meet-participant-options.yaml'
diff --git a/backend/openapi/components/requestBodies/start-recording-request.yaml b/backend/openapi/components/requestBodies/internal/start-recording-request.yaml
similarity index 100%
rename from backend/openapi/components/requestBodies/start-recording-request.yaml
rename to backend/openapi/components/requestBodies/internal/start-recording-request.yaml
diff --git a/backend/openapi/components/responses/error-recording-in-progress.yaml b/backend/openapi/components/responses/error-recording-in-progress.yaml
index 979cd8a..7bcec77 100644
--- a/backend/openapi/components/responses/error-recording-in-progress.yaml
+++ b/backend/openapi/components/responses/error-recording-in-progress.yaml
@@ -4,5 +4,5 @@ content:
         schema:
             $ref: '../schemas/error.yaml'
         example:
-            name: 'Recording Error'
-            message: 'Recording "room-123--EG_XYZ--XX445" is in progress'
+            error: 'Recording Error'
+            message: 'Recording "room-123--EG_XYZ--XX445" is not stopped yet'
diff --git a/backend/openapi/components/responses/error-recording-not-found.yaml b/backend/openapi/components/responses/error-recording-not-found.yaml
index 59c5c67..1c22772 100644
--- a/backend/openapi/components/responses/error-recording-not-found.yaml
+++ b/backend/openapi/components/responses/error-recording-not-found.yaml
@@ -4,5 +4,5 @@ content:
         schema:
             $ref: '../schemas/error.yaml'
         example:
-            name: 'Recording Error'
+            error: 'Recording Error'
             message: 'Recording "room-123--EG_XYZ--XX445" not found'
diff --git a/backend/openapi/components/responses/error-room-not-found.yaml b/backend/openapi/components/responses/error-room-not-found.yaml
index 6265d1a..c688b8a 100644
--- a/backend/openapi/components/responses/error-room-not-found.yaml
+++ b/backend/openapi/components/responses/error-room-not-found.yaml
@@ -4,5 +4,5 @@ content:
         schema:
             $ref: '../schemas/error.yaml'
         example:
-            name: 'Room Error'
-            message: 'The room "room_123" does not exist'
+            error: 'Room Error'
+            message: 'Room "room_123" does not exist'
diff --git a/backend/openapi/components/responses/forbidden-error.yaml b/backend/openapi/components/responses/forbidden-error.yaml
index 9b3a5a9..78cdf1c 100644
--- a/backend/openapi/components/responses/forbidden-error.yaml
+++ b/backend/openapi/components/responses/forbidden-error.yaml
@@ -4,4 +4,5 @@ content:
         schema:
             $ref: '../schemas/error.yaml'
         example:
+            error: Authorization Error
             message: 'Insufficient permissions to access this resource'
diff --git a/backend/openapi/components/responses/internal-server-error.yaml b/backend/openapi/components/responses/internal-server-error.yaml
index 1ecc014..60a66a7 100644
--- a/backend/openapi/components/responses/internal-server-error.yaml
+++ b/backend/openapi/components/responses/internal-server-error.yaml
@@ -4,4 +4,5 @@ content:
         schema:
             $ref: '../schemas/error.yaml'
         example:
-            message: 'Internal server error'
+            error: 'Internal Server Error'
+            message: 'Unexpected error occurred'
diff --git a/backend/openapi/components/responses/internal/error-invalid-credentials.yaml b/backend/openapi/components/responses/internal/error-invalid-credentials.yaml
index 72eace1..de36544 100644
--- a/backend/openapi/components/responses/internal/error-invalid-credentials.yaml
+++ b/backend/openapi/components/responses/internal/error-invalid-credentials.yaml
@@ -4,4 +4,5 @@ content:
         schema:
             $ref: ../../schemas/error.yaml
         example:
-            message: 'Login failed. Invalid username or password'
+            error:  Login Error
+            message: 'Invalid username or password'
diff --git a/backend/openapi/components/responses/internal/error-invalid-refresh-token.yaml b/backend/openapi/components/responses/internal/error-invalid-refresh-token.yaml
index b96e791..5cb1db7 100644
--- a/backend/openapi/components/responses/internal/error-invalid-refresh-token.yaml
+++ b/backend/openapi/components/responses/internal/error-invalid-refresh-token.yaml
@@ -4,4 +4,5 @@ content:
         schema:
             $ref: ../../schemas/error.yaml
         example:
+            error: Refresh Token Error
             message: 'No refresh token provided'
diff --git a/backend/openapi/components/responses/internal/error-invalid-room-secret.yaml b/backend/openapi/components/responses/internal/error-invalid-room-secret.yaml
index 7934e9f..2d6ea92 100644
--- a/backend/openapi/components/responses/internal/error-invalid-room-secret.yaml
+++ b/backend/openapi/components/responses/internal/error-invalid-room-secret.yaml
@@ -4,5 +4,5 @@ content:
         schema:
             $ref: ../../schemas/error.yaml
         example:
-            name: 'Room Error'
-            message: 'The secret "123456"" is not recognized for room "room-123"'
\ No newline at end of file
+            error: 'Room Error'
+            message: 'Secret "123456" is not recognized for room "room-123"'
\ No newline at end of file
diff --git a/backend/openapi/components/responses/internal/error-participant-already-exists.yaml b/backend/openapi/components/responses/internal/error-participant-already-exists.yaml
index 21f0155..e8559ab 100644
--- a/backend/openapi/components/responses/internal/error-participant-already-exists.yaml
+++ b/backend/openapi/components/responses/internal/error-participant-already-exists.yaml
@@ -4,5 +4,5 @@ content:
         schema:
             $ref: '../../schemas/error.yaml'
         example:
-            name: 'Participant Error'
-            message: '"Alice" already exists in the room "room_123"'
+            error: 'Participant Error'
+            message: 'Participant "Alice" already exists in room "room_123"'
diff --git a/backend/openapi/components/responses/internal/error-participant-not-found.yaml b/backend/openapi/components/responses/internal/error-participant-not-found.yaml
index 45809d1..8f7a861 100644
--- a/backend/openapi/components/responses/internal/error-participant-not-found.yaml
+++ b/backend/openapi/components/responses/internal/error-participant-not-found.yaml
@@ -4,5 +4,5 @@ content:
         schema:
             $ref: '../../schemas/error.yaml'
         example:
-            name: 'Participant Error'
-            message: '"Alice" not found in room "room_123"'
+            error: 'Participant Error'
+            message: 'Participant "Alice" not found in room "room_123"'
diff --git a/backend/openapi/components/responses/internal/error-participant-token-still-valid.yaml b/backend/openapi/components/responses/internal/error-participant-token-still-valid.yaml
index 71c941e..20f17dc 100644
--- a/backend/openapi/components/responses/internal/error-participant-token-still-valid.yaml
+++ b/backend/openapi/components/responses/internal/error-participant-token-still-valid.yaml
@@ -4,4 +4,5 @@ content:
         schema:
             $ref: '../../schemas/error.yaml'
         example:
+            error: Participant Error
             message: 'Participant token is still valid'
diff --git a/backend/openapi/components/responses/internal/error-recording-conflict.yaml b/backend/openapi/components/responses/internal/error-recording-conflict.yaml
index 5daa49c..1afe2ae 100644
--- a/backend/openapi/components/responses/internal/error-recording-conflict.yaml
+++ b/backend/openapi/components/responses/internal/error-recording-conflict.yaml
@@ -7,10 +7,10 @@ content:
             already_recording:
                 summary: Room is already being recorded
                 value:
-                    name: 'Recording Error'
-                    message: 'The room "room-123" is already being recorded'
+                    error: 'Recording Error'
+                    message: 'Room "room-123" is already being recorded'
             no_participants:
                 summary: Room has no participants
                 value:
-                    name: 'Recording Error'
-                    message: 'The room "room-123" has no participants'
+                    error: 'Recording Error'
+                    message: 'Room "room-123" has no participants'
diff --git a/backend/openapi/components/responses/internal/error-recording-not-active.yaml b/backend/openapi/components/responses/internal/error-recording-not-active.yaml
index 8416c69..8401898 100644
--- a/backend/openapi/components/responses/internal/error-recording-not-active.yaml
+++ b/backend/openapi/components/responses/internal/error-recording-not-active.yaml
@@ -3,6 +3,14 @@ content:
     application/json:
         schema:
             $ref: '../../schemas/error.yaml'
-        example:
-            name: 'Recording Error'
-            message: 'Recording "room-123--EG_XYZ--XX445" is already stopped'
+        examples:
+            starting_recording:
+                summary: Recording is starting
+                value:
+                    error: 'Recording Error'
+                    message: 'Recording "room-123--EG_XYZ--XX445" cannot be stopped while starting'
+            already_stopped:
+                summary: Recording is already stopped
+                value:
+                    error: 'Recording Error'
+                    message: 'Recording "room-123--EG_XYZ--XX445" is already stopped'
diff --git a/backend/openapi/components/responses/internal/error-service-unavailable.yaml b/backend/openapi/components/responses/internal/error-service-unavailable.yaml
index b662579..0520647 100644
--- a/backend/openapi/components/responses/internal/error-service-unavailable.yaml
+++ b/backend/openapi/components/responses/internal/error-service-unavailable.yaml
@@ -7,5 +7,5 @@ content:
             starting_timeout:
                 summary: Recording service timed out
                 value:
-                    name: 'Recording Error'
+                    error: 'Recording Error'
                     message: Recording in room 'room-123' timed out while starting
diff --git a/backend/openapi/components/responses/unauthorized-error.yaml b/backend/openapi/components/responses/unauthorized-error.yaml
index fa6da95..4a81ccb 100644
--- a/backend/openapi/components/responses/unauthorized-error.yaml
+++ b/backend/openapi/components/responses/unauthorized-error.yaml
@@ -4,4 +4,5 @@ content:
         schema:
             $ref: '../schemas/error.yaml'
         example:
+            error: Authentication Error
             message: 'Unauthorized'
diff --git a/backend/openapi/components/responses/validation-error.yaml b/backend/openapi/components/responses/validation-error.yaml
index f8a48e7..2ffee30 100644
--- a/backend/openapi/components/responses/validation-error.yaml
+++ b/backend/openapi/components/responses/validation-error.yaml
@@ -2,4 +2,10 @@ description: Unprocessable Entity — Invalid request body
 content:
     application/json:
         schema:
-            $ref: '../schemas/validation-error.yaml'
+            $ref: '../schemas/error.yaml'
+        example:
+            error: 'Unprocessable Entity'
+            message: 'Invalid request'
+            details:
+                - field: '{{field}}'
+                  message: 'Expected {{type}} but got {{value}}'
diff --git a/backend/openapi/components/schemas/error.yaml b/backend/openapi/components/schemas/error.yaml
index 553da84..7663088 100644
--- a/backend/openapi/components/schemas/error.yaml
+++ b/backend/openapi/components/schemas/error.yaml
@@ -1,11 +1,21 @@
 type: object
 required:
+    - error
     - message
 properties:
-    name:
+    error:
         type: string
+        description: Name of the error
     message:
         type: string
-    code:
-        type: integer
-        description: HTTP status code associated with the error
+        description: Description of the error
+    details:
+        description: List of validation errors in case of '422 Unprocessable Entity' error
+        type: array
+        items:
+            type: object
+            properties:
+                field:
+                    type: string
+                message:
+                    type: string
diff --git a/backend/openapi/components/schemas/internal/meet-token-options.yaml b/backend/openapi/components/schemas/internal/meet-participant-options.yaml
similarity index 100%
rename from backend/openapi/components/schemas/internal/meet-token-options.yaml
rename to backend/openapi/components/schemas/internal/meet-participant-options.yaml
diff --git a/backend/openapi/components/schemas/meet-room-preferences.yaml b/backend/openapi/components/schemas/meet-room-preferences.yaml
index cc7d968..3dfd803 100644
--- a/backend/openapi/components/schemas/meet-room-preferences.yaml
+++ b/backend/openapi/components/schemas/meet-room-preferences.yaml
@@ -10,7 +10,6 @@ MeetRoomPreferences:
         virtualBackgroundPreferences:
             $ref: '#/MeetVirtualBackgroundPreferences'
             description: Preferences for virtual background in the room.
-
 MeetChatPreferences:
     type: object
     properties:
diff --git a/backend/openapi/components/schemas/validation-error.yaml b/backend/openapi/components/schemas/validation-error.yaml
deleted file mode 100644
index cd90d6f..0000000
--- a/backend/openapi/components/schemas/validation-error.yaml
+++ /dev/null
@@ -1,19 +0,0 @@
-type: object
-properties:
-    error:
-        type: string
-        example: 'Unprocessable Entity'
-    message:
-        type: string
-        example: 'Invalid request'
-    details:
-        type: array
-        items:
-            type: object
-            properties:
-                field:
-                    type: string
-                    example: '{{field}}'
-                message:
-                    type: string
-                    example: 'Expected {{type}} but got {{value}}'
diff --git a/backend/openapi/paths/internal/recordings.yaml b/backend/openapi/paths/internal/recordings.yaml
index 435ade9..fa62849 100644
--- a/backend/openapi/paths/internal/recordings.yaml
+++ b/backend/openapi/paths/internal/recordings.yaml
@@ -9,7 +9,7 @@
         security:
             - participantTokenCookie: []
         requestBody:
-            $ref: '../../components/requestBodies/start-recording-request.yaml'
+            $ref: '../../components/requestBodies/internal/start-recording-request.yaml'
         responses:
             '201':
                 $ref: '../../components/responses/internal/success-start-recording.yaml'
diff --git a/backend/src/models/error.model.ts b/backend/src/models/error.model.ts
index 7446463..d580c68 100644
--- a/backend/src/models/error.model.ts
+++ b/backend/src/models/error.model.ts
@@ -85,7 +85,7 @@ export const errorInvalidRefreshToken = (): OpenViduMeetError => {
 };
 
 export const errorInsufficientPermissions = (): OpenViduMeetError => {
-	return new OpenViduMeetError('Authorization Error', 'You do not have permission to access this resource', 403);
+	return new OpenViduMeetError('Authorization Error', 'Insufficient permissions to access this resource', 403);
 };
 
 export const errorInvalidApiKey = (): OpenViduMeetError => {