diff --git a/OpenAPI/TS28541_NrNrm.yaml b/OpenAPI/TS28541_NrNrm.yaml
index acf6603dea2e012e2c5f0a36cd110fc6fad07dc4..23ae0bec901ed12fdcd3f5e35a9417481169093c 100755
--- a/OpenAPI/TS28541_NrNrm.yaml
+++ b/OpenAPI/TS28541_NrNrm.yaml
@@ -16,7 +16,9 @@ components:
 #-------- Definition of types-----------------------------------------------------
 
     GnbId:
-      type: string
+      type: integer
+      minimum: 0
+      maximum: 4294967295
     GnbIdLength:
       type: integer
       minimum: 22
@@ -25,16 +27,17 @@ components:
       type: string
       maxLength: 150
     GnbDuId:
-      type: number
+      type: integer
       minimum: 0
       maximum: 68719476735
     GnbCuUpId:
-      type: number
+      type: integer
       minimum: 0
       maximum: 68719476735
 
     Sst:
       type: integer
+      minimum: 0
       maximum: 255
     Snssai:
       type: object