diff --git a/OpenAPI/TS28541_SliceNrm.yaml b/OpenAPI/TS28541_SliceNrm.yaml
index 387c24420e43faa5cdcdb6bd52abd2b515821b54..05fbeb3a822385756f4fdda419047fd7cbf471ab 100755
--- a/OpenAPI/TS28541_SliceNrm.yaml
+++ b/OpenAPI/TS28541_SliceNrm.yaml
@@ -818,6 +818,8 @@ components:
                   $ref: '#/components/schemas/RecommendationRequest'
                 requestedReservationExpiration:
                   $ref: '#/components/schemas/RequestedReservationExpiration'
+                feasibilityTimeWindow:
+                  $ref: 'TS28623_ComDefs.yaml#/components/schemas/TimeWindow'                  
                 processMonitor:
                   $ref: 'TS28623_GenericNrm.yaml#/components/schemas/ProcessMonitor'
                 feasibilityResult: