diff --git a/config/api/vis-api.yaml b/config/api/vis-api.yaml
index 292f64ddae0895cb03a0b643108b1a3629a8bb7c..d7f12eaefb54ef3ba7e9d346a9b49678c19fcc8c 100644
--- a/config/api/vis-api.yaml
+++ b/config/api/vis-api.yaml
@@ -253,8 +253,8 @@ paths:
               filterCriteria:
                 stdOrganization: 'ETSI'
                 msgType:
-                  - "1"
-                  - "2"
+                  - 1
+                  - 2
               expiryDeadline:
                 seconds: 1977836800
                 nanoseconds: 0
@@ -278,8 +278,8 @@ paths:
                 filterCriteria:
                   stdOrganization: 'ETSI'
                   msgType:
-                    - "1"
-                    - "2"
+                    - 1
+                    - 2
                 expiryDeadline:
                   seconds: 1977836800
                   nanoseconds: 0
@@ -358,8 +358,8 @@ paths:
                 filterCriteria:
                   stdOrganization: 'ETSI'
                   msgType:
-                    - "1"
-                    - "2"
+                    - 1
+                    - 2
                 expiryDeadline:
                   seconds: 1977836800
                   nanoseconds: 0
@@ -401,8 +401,8 @@ paths:
               filterCriteria:
                 stdOrganization: 'ETSI'
                 msgType:
-                  - "3"
-                  - "4"
+                  - 3
+                  - 4
               expiryDeadline:
                 seconds: 1977836800
                 nanoseconds: 0
@@ -427,8 +427,8 @@ paths:
                   filterCriteria:
                     stdOrganization: 'ETSI'
                     msgType:
-                      - "3"
-                      - "4"
+                      - 3
+                      - 4
                   expiryDeadline:
                     seconds: 1977836800
                     nanoseconds: 0
@@ -1585,7 +1585,7 @@ components:
         msgType:
           description: Subscribed V2X message type. Its value is defined by the standardization organization indicated by the attribute stdOrganization. See note 3.
           items:
-            type: string
+            type: integer
           minItems: 0
           type: array
           x-etsi-mec-cardinality: 0..N