diff --git a/OpenAPI/TS28312_IntentNrm.yaml b/OpenAPI/TS28312_IntentNrm.yaml
index 855ea34bbda3f2b7e3e0a6a8c37a5b96ce0cf1ce..ca445e9136d264fa7ae1532f938a89f94c909ea0 100644
--- a/OpenAPI/TS28312_IntentNrm.yaml
+++ b/OpenAPI/TS28312_IntentNrm.yaml
@@ -586,6 +586,8 @@ components:
                 items:
                   $ref: "#/components/schemas/ValueRangeType"
               - $ref: "#/components/schemas/ValueRangeType"
+        contextInvariant:
+          type: boolean
       required:
         - contextAttribute
         - contextCondition