diff --git a/OpenAPI/TS28312_IntentExpectations.yaml b/OpenAPI/TS28312_IntentExpectations.yaml
index 5423a87adec8a3c0528b08c5843c3b45ea8bda89..241e556357f8b3d19bfe94de2edac9ad10624c31 100644
--- a/OpenAPI/TS28312_IntentExpectations.yaml
+++ b/OpenAPI/TS28312_IntentExpectations.yaml
@@ -46,7 +46,10 @@ components:
         expectationContexts:
           type: array
           items:
-            $ref: 'TS28312_IntentNrm.yaml#/components/schemas/ExpectationContext'
+            type: object
+            oneOf:
+             - $ref: '#/components/schemas/TargetAssuranceTimeContext'
+             - $ref: 'TS28312_IntentNrm.yaml#/components/schemas/ExpectationContext'
       required:
         - expectationId
     EdgeServiceSupportExpectation:
@@ -862,6 +865,23 @@ components:
    #-------Definition of the scenario specific  ObjectTarget dataType----------------#
    
    #-------Definition of the concrete ExpectationContext dataType----------------#
+
+    TargetAssuranceTimeContext:
+      description: >-
+        This data type is the "Expectation Context" data type with specialisations for TargetAssuranceTimeContext       
+      type: object
+      properties:
+        contextAttribute:
+          type: string
+          enum:
+            - TargetAssuranceTime
+        contextCondition:
+          type: string
+          enum:
+            - IS_EQUAL_TO
+        contextValueRange:
+          $ref: 'TS28623_ComDefs.yaml#/components/schemas/TimeWindow' 
+
     ServiceStartTimeContext:
       description: >-
         This data type is the "ExpectationContext" data type with specialisations for ServiceStartTimeContext