diff --git a/OpenAPI/TS28312_IntentNrm.yaml b/OpenAPI/TS28312_IntentNrm.yaml
index ca445e9136d264fa7ae1532f938a89f94c909ea0..be4dd56d83927a761dd024c7b3948973309a34e1 100644
--- a/OpenAPI/TS28312_IntentNrm.yaml
+++ b/OpenAPI/TS28312_IntentNrm.yaml
@@ -86,6 +86,13 @@ components:
           implicitIntentIndex:
             type: boolean
             default: false
+          guaranteePeriods:
+            type: array
+            uniqueItems: true
+            items:
+              type: object
+              oneOf:
+                - $ref: 'TS28312_IntentExpectations.yaml#/components/schemas/SchedulingTimeContext'
           intentHandlingInfo:
             $ref: '#/components/schemas/IntentHandlingInfo'
           intentInterpretationAssistanceInfo:
@@ -226,6 +233,13 @@ components:
           minimum: 0
           maximum: 10
           description: It represents the preference information of the Consumer on expectations.
+        guaranteePeriods:
+          type: array
+          uniqueItems: true
+          items:
+            type: object
+            oneOf:
+              - $ref: 'TS28312_IntentExpectations.yaml#/components/schemas/SchedulingTimeContext'
       required:
         - expectationId
         - expectationObject
@@ -696,6 +710,14 @@ components:
               Cell)  and corresponding attributes which are updated during intent fulfilment.
           type: string
           readOnly: true
+        guaranteeConfidenceLevel:
+          description: >-
+            It indicate the guarantee confidence level calculated by the MnS Producer. This should be reported if the 
+             corresponding intent is set for guarantee, i.e., when the guarantee period is set for the whole intent.
+          type: integer
+          minimum: 0
+          maximum: 100
+          readOnly: true
       required:
           - intentFulfilmentInfo
    #-------Definition of the concrete IntentFulfilmentReport dataType----------------#
@@ -718,6 +740,15 @@ components:
           uniqueItems: true
           items: 
             $ref: '#/components/schemas/TargetFulfilmentResult'
+        guaranteeConfidenceLevel:
+          description: >-
+            It indicate the guarantee confidence level calculated by the MnS Producer. This should be reported 
+             if the corresponding intent expectation is set for guarantee, i.e., when the guarantee period is 
+             set for the specific intent expectations. 
+          type: integer
+          minimum: 0
+          maximum: 100
+          readOnly: true
       required:
         - expectaitonId
         - expectationFulfilmentInfo