diff --git a/src/autorest.bicep/src/type-generator.ts b/src/autorest.bicep/src/type-generator.ts
index f9ed178b7d..e4dffc3e84 100755
--- a/src/autorest.bicep/src/type-generator.ts
+++ b/src/autorest.bicep/src/type-generator.ts
@@ -1,7 +1,7 @@
 // Copyright (c) Microsoft Corporation.
 // Licensed under the MIT License.
 
-import { AnySchema, ArraySchema, ByteArraySchema, ChoiceSchema, ConstantSchema, DictionarySchema, ObjectSchema, PrimitiveSchema, Property, Schema, SchemaType, SealedChoiceSchema, StringSchema } from "@autorest/codemodel";
+import { AnySchema, ArmIdSchema, ArraySchema, ByteArraySchema, ChoiceSchema, ConstantSchema, DictionarySchema, ObjectSchema, PrimitiveSchema, Property, Schema, SchemaType, SealedChoiceSchema, StringSchema } from "@autorest/codemodel";
 import { Channel, AutorestExtensionHost } from "@autorest/extension-base";
 import { ArrayType, BuiltInTypeKind, DiscriminatedObjectType, ObjectProperty, ObjectPropertyFlags, ObjectType, ResourceFlags, ResourceFunctionType, ResourceType, StringLiteralType, TypeFactory, TypeReference, UnionType } from "./types";
 import { uniq, keys, keyBy, Dictionary, flatMap } from 'lodash';
@@ -458,6 +458,7 @@ export function generateTypes(host: AutorestExtensionHost, definition: ProviderD
       case SchemaType.Uuid:
       case SchemaType.Duration:
       case SchemaType.Credential:
+      case SchemaType.ArmId:
         return BuiltInTypeKind.String;
       default:
         logWarning(`Unrecognized known property type: "${schema.type}"`);
diff --git a/src/autorest.bicep/test/integration/generated/basic/test.rp1/2021-10-31/types.json b/src/autorest.bicep/test/integration/generated/basic/test.rp1/2021-10-31/types.json
index fafb6e0abc..b214d79dd5 100644
--- a/src/autorest.bicep/test/integration/generated/basic/test.rp1/2021-10-31/types.json
+++ b/src/autorest.bicep/test/integration/generated/basic/test.rp1/2021-10-31/types.json
@@ -1 +1 @@
-[{"1":{"Kind":1}},{"1":{"Kind":2}},{"1":{"Kind":3}},{"1":{"Kind":4}},{"1":{"Kind":5}},{"1":{"Kind":6}},{"1":{"Kind":7}},{"1":{"Kind":8}},{"6":{"Value":"Test.Rp1/testType1"}},{"6":{"Value":"2021-10-31"}},{"2":{"Name":"Test.Rp1/testType1","Properties":{"id":{"Type":4,"Flags":10,"Description":"The resource id"},"name":{"Type":4,"Flags":9,"Description":"The resource name"},"type":{"Type":8,"Flags":10,"Description":"The resource type"},"apiVersion":{"Type":9,"Flags":10,"Description":"The resource api version"},"properties":{"Type":11,"Flags":0,"Description":"The resource properties."},"tags":{"Type":26,"Flags":0,"Description":"Resource tags."},"location":{"Type":4,"Flags":1,"Description":"The geo-location where the resource lives"},"systemData":{"Type":27,"Flags":2,"Description":"Azure Resource Manager metadata containing createdBy and modifiedBy information."}}}},{"2":{"Name":"TestType1CreateOrUpdatePropertiesOrTestType1Properties","Properties":{"basicString":{"Type":4,"Flags":0,"Description":"Description for a basic string property."},"stringEnum":{"Type":14,"Flags":0,"Description":"Description for a basic enum property."},"skuTier":{"Type":19,"Flags":0,"Description":"This field is required to be implemented by the Resource Provider if the service has more than one tier, but is not required on a PUT."},"encryptionProperties":{"Type":20,"Flags":0,"Description":"TestType1 encryption properties"},"locationData":{"Type":25,"Flags":2,"Description":"Metadata pertaining to the geographic location of the resource."},"base64EncodedBytes":{"Type":4,"Flags":2},"binaryBuffer":{"Type":0,"Flags":2}}}},{"6":{"Value":"Foo"}},{"6":{"Value":"Bar"}},{"5":{"Elements":[12,13,4]}},{"6":{"Value":"Free"}},{"6":{"Value":"Basic"}},{"6":{"Value":"Standard"}},{"6":{"Value":"Premium"}},{"5":{"Elements":[15,16,17,18]}},{"2":{"Name":"EncryptionProperties","Properties":{"status":{"Type":23,"Flags":0,"Description":"Indicates whether or not the encryption is enabled for container registry."},"keyVaultProperties":{"Type":24,"Flags":0,"Description":"Key vault properties."}}}},{"6":{"Value":"enabled"}},{"6":{"Value":"disabled"}},{"5":{"Elements":[21,22,4]}},{"2":{"Name":"KeyVaultProperties","Properties":{"keyIdentifier":{"Type":4,"Flags":0,"Description":"Key vault uri to access the encryption key."},"identity":{"Type":4,"Flags":0,"Description":"The client ID of the identity which will be used to access key vault."}}}},{"2":{"Name":"LocationData","Properties":{"name":{"Type":4,"Flags":1,"Description":"A canonical name for the geographic or physical location."},"city":{"Type":4,"Flags":0,"Description":"The city or locality where the resource is located."},"district":{"Type":4,"Flags":0,"Description":"The district, state, or province where the resource is located."},"countryOrRegion":{"Type":4,"Flags":0,"Description":"The country or region where the resource is located"}}}},{"2":{"Name":"TrackedResourceTags","Properties":{},"AdditionalProperties":4}},{"2":{"Name":"SystemData","Properties":{"createdBy":{"Type":4,"Flags":0,"Description":"The identity that created the resource."},"createdByType":{"Type":32,"Flags":0,"Description":"The type of identity that created the resource."},"createdAt":{"Type":4,"Flags":0,"Description":"The timestamp of resource creation (UTC)."},"lastModifiedBy":{"Type":4,"Flags":0,"Description":"The identity that last modified the resource."},"lastModifiedByType":{"Type":37,"Flags":0,"Description":"The type of identity that last modified the resource."},"lastModifiedAt":{"Type":4,"Flags":0,"Description":"The timestamp of resource last modification (UTC)"}}}},{"6":{"Value":"User"}},{"6":{"Value":"Application"}},{"6":{"Value":"ManagedIdentity"}},{"6":{"Value":"Key"}},{"5":{"Elements":[28,29,30,31,4]}},{"6":{"Value":"User"}},{"6":{"Value":"Application"}},{"6":{"Value":"ManagedIdentity"}},{"6":{"Value":"Key"}},{"5":{"Elements":[33,34,35,36,4]}},{"4":{"Name":"Test.Rp1/testType1@2021-10-31","ScopeType":8,"Body":10,"Flags":0}},{"6":{"Value":"constantName"}},{"6":{"Value":"yetAnotherName"}},{"5":{"Elements":[39,40,4]}},{"6":{"Value":"Test.Rp1/splitPutAndGetType"}},{"6":{"Value":"2021-10-31"}},{"2":{"Name":"Test.Rp1/splitPutAndGetType","Properties":{"id":{"Type":4,"Flags":10,"Description":"The resource id"},"name":{"Type":41,"Flags":9,"Description":"The resource name"},"type":{"Type":42,"Flags":10,"Description":"The resource type"},"apiVersion":{"Type":43,"Flags":10,"Description":"The resource api version"},"properties":{"Type":11,"Flags":0,"Description":"The resource properties."},"tags":{"Type":45,"Flags":0,"Description":"Resource tags."},"location":{"Type":4,"Flags":1,"Description":"The geo-location where the resource lives"},"systemData":{"Type":27,"Flags":2,"Description":"Azure Resource Manager metadata containing createdBy and modifiedBy information."}}}},{"2":{"Name":"TrackedResourceTags","Properties":{},"AdditionalProperties":4}},{"4":{"Name":"Test.Rp1/splitPutAndGetType@2021-10-31","ScopeType":4,"Body":44,"Flags":0}},{"6":{"Value":"Test.Rp1/partlyReadonlyType"}},{"6":{"Value":"2021-10-31"}},{"2":{"Name":"Test.Rp1/partlyReadonlyType","Properties":{"id":{"Type":4,"Flags":10,"Description":"The resource id"},"name":{"Type":4,"Flags":9,"Description":"The resource name"},"type":{"Type":47,"Flags":10,"Description":"The resource type"},"apiVersion":{"Type":48,"Flags":10,"Description":"The resource api version"},"properties":{"Type":50,"Flags":0},"tags":{"Type":59,"Flags":0,"Description":"Resource tags."},"location":{"Type":4,"Flags":1,"Description":"The geo-location where the resource lives"},"systemData":{"Type":27,"Flags":2,"Description":"Azure Resource Manager metadata containing createdBy and modifiedBy information."}}}},{"2":{"Name":"TestType1Properties","Properties":{"locationData":{"Type":25,"Flags":0,"Description":"Metadata pertaining to the geographic location of the resource."},"base64EncodedBytes":{"Type":4,"Flags":0},"binaryBuffer":{"Type":0,"Flags":0},"basicString":{"Type":4,"Flags":0,"Description":"Description for a basic string property."},"stringEnum":{"Type":53,"Flags":0,"Description":"Description for a basic enum property."},"skuTier":{"Type":58,"Flags":0,"Description":"This field is required to be implemented by the Resource Provider if the service has more than one tier, but is not required on a PUT."},"encryptionProperties":{"Type":20,"Flags":0,"Description":"TestType1 encryption properties"}}}},{"6":{"Value":"Foo"}},{"6":{"Value":"Bar"}},{"5":{"Elements":[51,52,4]}},{"6":{"Value":"Free"}},{"6":{"Value":"Basic"}},{"6":{"Value":"Standard"}},{"6":{"Value":"Premium"}},{"5":{"Elements":[54,55,56,57]}},{"2":{"Name":"TrackedResourceTags","Properties":{},"AdditionalProperties":4}},{"4":{"Name":"Test.Rp1/partlyReadonlyType@2021-10-31","ScopeType":9,"ReadOnlyScopes":1,"Body":49,"Flags":0}},{"6":{"Value":"Test.Rp1/readOnlyTestType"}},{"6":{"Value":"2021-10-31"}},{"2":{"Name":"Test.Rp1/readOnlyTestType","Properties":{"id":{"Type":4,"Flags":10,"Description":"The resource id"},"name":{"Type":4,"Flags":9,"Description":"The resource name"},"type":{"Type":61,"Flags":10,"Description":"The resource type"},"apiVersion":{"Type":62,"Flags":10,"Description":"The resource api version"},"properties":{"Type":64,"Flags":2},"tags":{"Type":66,"Flags":2,"Description":"Resource tags."},"location":{"Type":4,"Flags":2,"Description":"The geo-location where the resource lives"},"systemData":{"Type":27,"Flags":2,"Description":"Azure Resource Manager metadata containing createdBy and modifiedBy information."}}}},{"2":{"Name":"ReadOnlyTestTypeProperties","Properties":{"plan":{"Type":65,"Flags":0,"Description":"Plan for the resource."}}}},{"2":{"Name":"Plan","Properties":{"name":{"Type":4,"Flags":1,"Description":"A user defined name of the 3rd Party Artifact that is being procured."},"publisher":{"Type":4,"Flags":1,"Description":"The publisher of the 3rd Party Artifact that is being bought. E.g. NewRelic"},"product":{"Type":4,"Flags":1,"Description":"The 3rd Party artifact that is being procured. E.g. NewRelic. Product maps to the OfferID specified for the artifact at the time of Data Market onboarding."},"promotionCode":{"Type":4,"Flags":0,"Description":"A publisher provided promotion code as provisioned in Data Market for the said product/artifact."},"version":{"Type":4,"Flags":0,"Description":"The version of the desired product/artifact."}}}},{"2":{"Name":"TrackedResourceTags","Properties":{},"AdditionalProperties":4}},{"4":{"Name":"Test.Rp1/readOnlyTestType@2021-10-31","ScopeType":8,"Body":63,"Flags":1}},{"2":{"Name":"FoosRequest","Properties":{"someString":{"Type":4,"Flags":1,"Description":"The foo request string"},"locationData":{"Type":25,"Flags":0,"Description":"Metadata pertaining to the geographic location of the resource."}}}},{"2":{"Name":"FoosResponse","Properties":{"someString":{"Type":4,"Flags":0,"Description":"The foo response string"}}}},{"8":{"Name":"listFoos","ResourceType":"Test.Rp1/testType1","ApiVersion":"2021-10-31","Output":69,"Input":68}},{"3":{"ItemType":69}},{"8":{"Name":"listArrayOfFoos","ResourceType":"Test.Rp1/testType1","ApiVersion":"2021-10-31","Output":71}}]
\ No newline at end of file
+[{"1":{"Kind":1}},{"1":{"Kind":2}},{"1":{"Kind":3}},{"1":{"Kind":4}},{"1":{"Kind":5}},{"1":{"Kind":6}},{"1":{"Kind":7}},{"1":{"Kind":8}},{"6":{"Value":"Test.Rp1/testType1"}},{"6":{"Value":"2021-10-31"}},{"2":{"Name":"Test.Rp1/testType1","Properties":{"id":{"Type":4,"Flags":10,"Description":"The resource id"},"name":{"Type":4,"Flags":9,"Description":"The resource name"},"type":{"Type":8,"Flags":10,"Description":"The resource type"},"apiVersion":{"Type":9,"Flags":10,"Description":"The resource api version"},"properties":{"Type":11,"Flags":0,"Description":"The resource properties."},"tags":{"Type":26,"Flags":0,"Description":"Resource tags."},"location":{"Type":4,"Flags":1,"Description":"The geo-location where the resource lives"},"systemData":{"Type":27,"Flags":2,"Description":"Azure Resource Manager metadata containing createdBy and modifiedBy information."}}}},{"2":{"Name":"TestType1CreateOrUpdatePropertiesOrTestType1Properties","Properties":{"basicString":{"Type":4,"Flags":0,"Description":"Description for a basic string property."},"stringEnum":{"Type":14,"Flags":0,"Description":"Description for a basic enum property."},"skuTier":{"Type":19,"Flags":0,"Description":"This field is required to be implemented by the Resource Provider if the service has more than one tier, but is not required on a PUT."},"encryptionProperties":{"Type":20,"Flags":0,"Description":"TestType1 encryption properties"},"locationData":{"Type":25,"Flags":2,"Description":"Metadata pertaining to the geographic location of the resource."},"base64EncodedBytes":{"Type":4,"Flags":2},"binaryBuffer":{"Type":0,"Flags":2},"subnetId":{"Type":4,"Flags":2,"Description":"A fully-qualified resource ID"}}}},{"6":{"Value":"Foo"}},{"6":{"Value":"Bar"}},{"5":{"Elements":[12,13,4]}},{"6":{"Value":"Free"}},{"6":{"Value":"Basic"}},{"6":{"Value":"Standard"}},{"6":{"Value":"Premium"}},{"5":{"Elements":[15,16,17,18]}},{"2":{"Name":"EncryptionProperties","Properties":{"status":{"Type":23,"Flags":0,"Description":"Indicates whether or not the encryption is enabled for container registry."},"keyVaultProperties":{"Type":24,"Flags":0,"Description":"Key vault properties."}}}},{"6":{"Value":"enabled"}},{"6":{"Value":"disabled"}},{"5":{"Elements":[21,22,4]}},{"2":{"Name":"KeyVaultProperties","Properties":{"keyIdentifier":{"Type":4,"Flags":0,"Description":"Key vault uri to access the encryption key."},"identity":{"Type":4,"Flags":0,"Description":"The client ID of the identity which will be used to access key vault."}}}},{"2":{"Name":"LocationData","Properties":{"name":{"Type":4,"Flags":1,"Description":"A canonical name for the geographic or physical location."},"city":{"Type":4,"Flags":0,"Description":"The city or locality where the resource is located."},"district":{"Type":4,"Flags":0,"Description":"The district, state, or province where the resource is located."},"countryOrRegion":{"Type":4,"Flags":0,"Description":"The country or region where the resource is located"}}}},{"2":{"Name":"TrackedResourceTags","Properties":{},"AdditionalProperties":4}},{"2":{"Name":"SystemData","Properties":{"createdBy":{"Type":4,"Flags":0,"Description":"The identity that created the resource."},"createdByType":{"Type":32,"Flags":0,"Description":"The type of identity that created the resource."},"createdAt":{"Type":4,"Flags":0,"Description":"The timestamp of resource creation (UTC)."},"lastModifiedBy":{"Type":4,"Flags":0,"Description":"The identity that last modified the resource."},"lastModifiedByType":{"Type":37,"Flags":0,"Description":"The type of identity that last modified the resource."},"lastModifiedAt":{"Type":4,"Flags":0,"Description":"The timestamp of resource last modification (UTC)"}}}},{"6":{"Value":"User"}},{"6":{"Value":"Application"}},{"6":{"Value":"ManagedIdentity"}},{"6":{"Value":"Key"}},{"5":{"Elements":[28,29,30,31,4]}},{"6":{"Value":"User"}},{"6":{"Value":"Application"}},{"6":{"Value":"ManagedIdentity"}},{"6":{"Value":"Key"}},{"5":{"Elements":[33,34,35,36,4]}},{"4":{"Name":"Test.Rp1/testType1@2021-10-31","ScopeType":8,"Body":10,"Flags":0}},{"6":{"Value":"constantName"}},{"6":{"Value":"yetAnotherName"}},{"5":{"Elements":[39,40,4]}},{"6":{"Value":"Test.Rp1/splitPutAndGetType"}},{"6":{"Value":"2021-10-31"}},{"2":{"Name":"Test.Rp1/splitPutAndGetType","Properties":{"id":{"Type":4,"Flags":10,"Description":"The resource id"},"name":{"Type":41,"Flags":9,"Description":"The resource name"},"type":{"Type":42,"Flags":10,"Description":"The resource type"},"apiVersion":{"Type":43,"Flags":10,"Description":"The resource api version"},"properties":{"Type":11,"Flags":0,"Description":"The resource properties."},"tags":{"Type":45,"Flags":0,"Description":"Resource tags."},"location":{"Type":4,"Flags":1,"Description":"The geo-location where the resource lives"},"systemData":{"Type":27,"Flags":2,"Description":"Azure Resource Manager metadata containing createdBy and modifiedBy information."}}}},{"2":{"Name":"TrackedResourceTags","Properties":{},"AdditionalProperties":4}},{"4":{"Name":"Test.Rp1/splitPutAndGetType@2021-10-31","ScopeType":4,"Body":44,"Flags":0}},{"6":{"Value":"Test.Rp1/partlyReadonlyType"}},{"6":{"Value":"2021-10-31"}},{"2":{"Name":"Test.Rp1/partlyReadonlyType","Properties":{"id":{"Type":4,"Flags":10,"Description":"The resource id"},"name":{"Type":4,"Flags":9,"Description":"The resource name"},"type":{"Type":47,"Flags":10,"Description":"The resource type"},"apiVersion":{"Type":48,"Flags":10,"Description":"The resource api version"},"properties":{"Type":50,"Flags":0},"tags":{"Type":59,"Flags":0,"Description":"Resource tags."},"location":{"Type":4,"Flags":1,"Description":"The geo-location where the resource lives"},"systemData":{"Type":27,"Flags":2,"Description":"Azure Resource Manager metadata containing createdBy and modifiedBy information."}}}},{"2":{"Name":"TestType1Properties","Properties":{"locationData":{"Type":25,"Flags":0,"Description":"Metadata pertaining to the geographic location of the resource."},"base64EncodedBytes":{"Type":4,"Flags":0},"binaryBuffer":{"Type":0,"Flags":0},"subnetId":{"Type":4,"Flags":0,"Description":"A fully-qualified resource ID"},"basicString":{"Type":4,"Flags":0,"Description":"Description for a basic string property."},"stringEnum":{"Type":53,"Flags":0,"Description":"Description for a basic enum property."},"skuTier":{"Type":58,"Flags":0,"Description":"This field is required to be implemented by the Resource Provider if the service has more than one tier, but is not required on a PUT."},"encryptionProperties":{"Type":20,"Flags":0,"Description":"TestType1 encryption properties"}}}},{"6":{"Value":"Foo"}},{"6":{"Value":"Bar"}},{"5":{"Elements":[51,52,4]}},{"6":{"Value":"Free"}},{"6":{"Value":"Basic"}},{"6":{"Value":"Standard"}},{"6":{"Value":"Premium"}},{"5":{"Elements":[54,55,56,57]}},{"2":{"Name":"TrackedResourceTags","Properties":{},"AdditionalProperties":4}},{"4":{"Name":"Test.Rp1/partlyReadonlyType@2021-10-31","ScopeType":9,"ReadOnlyScopes":1,"Body":49,"Flags":0}},{"6":{"Value":"Test.Rp1/readOnlyTestType"}},{"6":{"Value":"2021-10-31"}},{"2":{"Name":"Test.Rp1/readOnlyTestType","Properties":{"id":{"Type":4,"Flags":10,"Description":"The resource id"},"name":{"Type":4,"Flags":9,"Description":"The resource name"},"type":{"Type":61,"Flags":10,"Description":"The resource type"},"apiVersion":{"Type":62,"Flags":10,"Description":"The resource api version"},"properties":{"Type":64,"Flags":2},"tags":{"Type":66,"Flags":2,"Description":"Resource tags."},"location":{"Type":4,"Flags":2,"Description":"The geo-location where the resource lives"},"systemData":{"Type":27,"Flags":2,"Description":"Azure Resource Manager metadata containing createdBy and modifiedBy information."}}}},{"2":{"Name":"ReadOnlyTestTypeProperties","Properties":{"plan":{"Type":65,"Flags":0,"Description":"Plan for the resource."}}}},{"2":{"Name":"Plan","Properties":{"name":{"Type":4,"Flags":1,"Description":"A user defined name of the 3rd Party Artifact that is being procured."},"publisher":{"Type":4,"Flags":1,"Description":"The publisher of the 3rd Party Artifact that is being bought. E.g. NewRelic"},"product":{"Type":4,"Flags":1,"Description":"The 3rd Party artifact that is being procured. E.g. NewRelic. Product maps to the OfferID specified for the artifact at the time of Data Market onboarding."},"promotionCode":{"Type":4,"Flags":0,"Description":"A publisher provided promotion code as provisioned in Data Market for the said product/artifact."},"version":{"Type":4,"Flags":0,"Description":"The version of the desired product/artifact."}}}},{"2":{"Name":"TrackedResourceTags","Properties":{},"AdditionalProperties":4}},{"4":{"Name":"Test.Rp1/readOnlyTestType@2021-10-31","ScopeType":8,"Body":63,"Flags":1}},{"2":{"Name":"FoosRequest","Properties":{"someString":{"Type":4,"Flags":1,"Description":"The foo request string"},"locationData":{"Type":25,"Flags":0,"Description":"Metadata pertaining to the geographic location of the resource."}}}},{"2":{"Name":"FoosResponse","Properties":{"someString":{"Type":4,"Flags":0,"Description":"The foo response string"}}}},{"8":{"Name":"listFoos","ResourceType":"Test.Rp1/testType1","ApiVersion":"2021-10-31","Output":69,"Input":68}},{"3":{"ItemType":69}},{"8":{"Name":"listArrayOfFoos","ResourceType":"Test.Rp1/testType1","ApiVersion":"2021-10-31","Output":71}}]
\ No newline at end of file
diff --git a/src/autorest.bicep/test/integration/generated/basic/test.rp1/2021-10-31/types.md b/src/autorest.bicep/test/integration/generated/basic/test.rp1/2021-10-31/types.md
index 3e38a11dbf..b4771f5f19 100644
--- a/src/autorest.bicep/test/integration/generated/basic/test.rp1/2021-10-31/types.md
+++ b/src/autorest.bicep/test/integration/generated/basic/test.rp1/2021-10-31/types.md
@@ -119,6 +119,7 @@
 * **locationData**: [LocationData](#locationdata) (ReadOnly): Metadata pertaining to the geographic location of the resource.
 * **skuTier**: 'Basic' | 'Free' | 'Premium' | 'Standard': This field is required to be implemented by the Resource Provider if the service has more than one tier, but is not required on a PUT.
 * **stringEnum**: 'Bar' | 'Foo' | string: Description for a basic enum property.
+* **subnetId**: string (ReadOnly): A fully-qualified resource ID
 
 ## TestType1Properties
 ### Properties
@@ -129,6 +130,7 @@
 * **locationData**: [LocationData](#locationdata): Metadata pertaining to the geographic location of the resource.
 * **skuTier**: 'Basic' | 'Free' | 'Premium' | 'Standard': This field is required to be implemented by the Resource Provider if the service has more than one tier, but is not required on a PUT.
 * **stringEnum**: 'Bar' | 'Foo' | string: Description for a basic enum property.
+* **subnetId**: string: A fully-qualified resource ID
 
 ## TrackedResourceTags
 ### Properties
diff --git a/src/autorest.bicep/test/integration/specs/basic/resource-manager/Test.Rp1/stable/2021-10-31/spec.json b/src/autorest.bicep/test/integration/specs/basic/resource-manager/Test.Rp1/stable/2021-10-31/spec.json
index a420db5f53..4d39740632 100644
--- a/src/autorest.bicep/test/integration/specs/basic/resource-manager/Test.Rp1/stable/2021-10-31/spec.json
+++ b/src/autorest.bicep/test/integration/specs/basic/resource-manager/Test.Rp1/stable/2021-10-31/spec.json
@@ -112,6 +112,18 @@
         "binaryBuffer": {
           "type": "string",
           "format": "byte"
+        },
+        "subnetId": {
+          "type": "string",
+          "description": "A fully-qualified resource ID",
+          "format": "arm-id",
+          "x-ms-arm-id-details": {
+            "allowedResources": [
+              {
+                "type": "Microsoft.Network/virtualNetworks/subnets"
+              }
+            ]
+          }
         }
       }
     },