diff --git a/OpenAPI/TS32291_Nchf_ConvergedCharging.yaml b/OpenAPI/TS32291_Nchf_ConvergedCharging.yaml
index e740f7ac7ad1b02cdfa96a3e10d9bda1e2416167..21a49bd4ebb631ce2aa4e2085cfdda5d1f34f9f3 100644
--- a/OpenAPI/TS32291_Nchf_ConvergedCharging.yaml
+++ b/OpenAPI/TS32291_Nchf_ConvergedCharging.yaml
@@ -1609,7 +1609,8 @@ components:
           type: array
           items:
             type: string
-          minItems: 1
+          minItems: 0
+          maxItems: 1
         variablePartOrder:
           $ref: 'TS29571_CommonData.yaml#/components/schemas/Uint32'
       required: