diff --git a/OpenAPI/TS28541_SliceNrm.yaml b/OpenAPI/TS28541_SliceNrm.yaml
index 5191c7c9b651ada6ad11fe111c1a2ff6b6a66d1a..c63cd966e6979802081c74713499ec5c5bc9427a 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: