diff --git a/schemas/2018-06-01/Microsoft.DataFactory.json b/schemas/2018-06-01/Microsoft.DataFactory.json
index 605463564b..33b249fbcc 100644
--- a/schemas/2018-06-01/Microsoft.DataFactory.json
+++ b/schemas/2018-06-01/Microsoft.DataFactory.json
@@ -2674,15 +2674,9 @@
           "description": "Indicates whether the source files need to be deleted after copy completion. Default is false. Type: boolean (or Expression with resultType boolean)."
         },
         "enablePartitionDiscovery": {
-          "oneOf": [
-            {
-              "type": "boolean"
-            },
-            {
-              "$ref": "https://schema.management.azure.com/schemas/common/definitions.json#/definitions/expression"
-            }
-          ],
-          "description": "Indicates whether to enable partition discovery."
+          "type": "object",
+          "properties": {},
+          "description": "Indicates whether to enable partition discovery. Type: boolean (or Expression with resultType boolean)."
         },
         "fileListPath": {
           "type": "object",
@@ -2737,7 +2731,7 @@
         "copyBehavior": {
           "type": "object",
           "properties": {},
-          "description": "The type of copy behavior for copy sink."
+          "description": "The type of copy behavior for copy sink. Type: string (or Expression with resultType string)."
         },
         "metadata": {
           "oneOf": [
@@ -3983,15 +3977,9 @@
           "description": "Indicates whether the source files need to be deleted after copy completion. Default is false. Type: boolean (or Expression with resultType boolean)."
         },
         "enablePartitionDiscovery": {
-          "oneOf": [
-            {
-              "type": "boolean"
-            },
-            {
-              "$ref": "https://schema.management.azure.com/schemas/common/definitions.json#/definitions/expression"
-            }
-          ],
-          "description": "Indicates whether to enable partition discovery."
+          "type": "object",
+          "properties": {},
+          "description": "Indicates whether to enable partition discovery. Type: boolean (or Expression with resultType boolean)."
         },
         "fileListPath": {
           "type": "object",
@@ -4056,7 +4044,7 @@
         "copyBehavior": {
           "type": "object",
           "properties": {},
-          "description": "The type of copy behavior for copy sink."
+          "description": "The type of copy behavior for copy sink. Type: string (or Expression with resultType string)."
         },
         "enableAdlsSingleFileParallel": {
           "type": "object",
@@ -4101,7 +4089,7 @@
         "expiryDateTime": {
           "type": "object",
           "properties": {},
-          "description": "Specifies the expiry time of the written files. The time is applied to the UTC time zone in the format of \"2018-12-01T05:00:00Z\". Default value is NULL. Type: integer (or Expression with resultType integer)."
+          "description": "Specifies the expiry time of the written files. The time is applied to the UTC time zone in the format of \"2018-12-01T05:00:00Z\". Default value is NULL. Type: string (or Expression with resultType string)."
         },
         "type": {
           "type": "string",