diff --git a/OpenAPI/TS28541_SliceNrm.yaml b/OpenAPI/TS28541_SliceNrm.yaml
index ed9f5e4eaea0b2e05060cc45c704dd380f5d2910..24f8dde8779559bf03247eff2b942a0608105482 100755
--- a/OpenAPI/TS28541_SliceNrm.yaml
+++ b/OpenAPI/TS28541_SliceNrm.yaml
@@ -147,7 +147,9 @@ components:
         servAttrCom:
           $ref: '#/components/schemas/ServAttrCom'
         kPIList:
-          type: string
+          type: array
+          items:
+            type: string
     NBIoT:
       type: object
       properties: