diff --git a/OpenAPI/TS28541_SliceNrm.yaml b/OpenAPI/TS28541_SliceNrm.yaml
index dfbbd1bb857851f7504e7a9a728b1bb6bf85cbaa..9a6b692422d4a04c5eb61f3f6cbba5405e359ee6 100755
--- a/OpenAPI/TS28541_SliceNrm.yaml
+++ b/OpenAPI/TS28541_SliceNrm.yaml
@@ -528,9 +528,9 @@ components:
           reliability:
             type: number
           maxDLDataVolume:
-            type: string
+            type: number
           maxULDataVolume:
-            type: string
+            type: number
           sliceSimultaneousUse:
             $ref: '#/components/schemas/SliceSimultaneousUse'
           energyEfficiency: