Create an open extension (openTypeExtension object) and add custom properties in a new or existing instance of a resource. You can create an open extension in a resource instance and store custom data to it all in the same operation, except for specific resources.
The table in the Permissions section lists the resources that support open extensions.
Note: If you're creating open extensions on Outlook resources, see Outlook-specific considerations in openTypeExtension resource type.
Depending on the resource you're creating, the extension and the permission type (delegated or application) requested, the permission specified in the following table is the least privileged required to call this API. To learn more, including taking caution before choosing more privileged permissions, search for the following permissions in Permissions.
Use the same REST request that you use to create the instance.
POST /users/{id|userPrincipalName}/events
POST /users/{id|userPrincipalName}/messages
POST /groups/{id}/events
POST /groups/{id}/threads/{id}/posts/{id}/reply
POST /users/{id|userPrincipalName}/contacts
POST /users/{id|userPrincipalName}/todo/lists/{id}/tasks
POST /users/{id|userPrincipalName}/todo/lists
Note: This syntax shows some common ways to create the supported resource instances. All other POST syntaxes
that allows you to create these resource instances supports creating open extensions in them in a similar way.
See the Request body section about including the properties of the new resource instance and the extension in the request body.
Create an extension in an existing resource instance
Identify the resource instance in the request and do a POST to the extensions navigation property.
POST /devices/{id}/extensions
POST /users/{id|userPrincipalName}/events/{id}/extensions
POST /groups/{id}/extensions
POST /groups/{id}/events/{id}/extensions
POST /groups/{id}/threads/{id}/posts/{id}/extensions
POST /users/{id|userPrincipalName}/messages/{id}/extensions
POST /organization/{id}/extensions
POST /users/{id|userPrincipalName}/contacts/{id}/extensions
POST /users/{id|userPrincipalName}/extensions
POST /users/{id|userPrincipalName}/todo/lists/{id}/tasks/{id}/extensions
POST /users/{id|userPrincipalName}/todo/lists/{id}/extensions
Note: This syntax shows some common ways to identify a resource instance, in order to create an
extension in it. All other syntaxes that allows you to identify these resource instances supports creating open extensions in them in a similar way.
See the Request body section about including the extension in the request body.
Path parameters
Parameter
Type
Description
id
string
A unique identifier for an object in the corresponding collection. Required.
Provide a JSON body of an openTypeExtension, with the following required
name-value pairs, and any other custom data. The data in the JSON payload can be primitive types, or arrays of
primitive types.
Name
Value
@odata.type
microsoft.graph.openTypeExtension
extensionName
%unique_string%
When creating an extension in a new resource instance, in addition to the
new openTypeExtension object, provide a JSON representation of the relevant properties to create such a resource instance.
Response
Response code
Depending on the operation, the response code can be 201 Created or 202 Accepted.
When you create an extension using the same operation that you use to create a resource instance, the operation returns the same response code that it returns when you use the operation to create the resource instance without the extension.
Refer to the corresponding articles for creating the instance, as listed above.
Response body
Scenario
Resource
Response body
Creating an extension while explicitly creating a new resource instance
// Code snippets are only available for the latest version. Current version is 5.x
// Dependencies
using Microsoft.Graph.Models;
var requestBody = new Message
{
Subject = "Annual review",
Body = new ItemBody
{
ContentType = BodyType.Html,
Content = "You should be proud!",
},
ToRecipients = new List<Recipient>
{
new Recipient
{
EmailAddress = new EmailAddress
{
Address = "rufus@contoso.com",
},
},
},
Extensions = new List<Extension>
{
new OpenTypeExtension
{
OdataType = "microsoft.graph.openTypeExtension",
ExtensionName = "Com.Contoso.Referral",
AdditionalData = new Dictionary<string, object>
{
{
"companyName" , "Wingtip Toys"
},
{
"expirationDate" , "2015-12-30T11:00:00.000Z"
},
{
"dealValue" , 10000
},
},
},
},
};
// To initialize your graphClient, see https://learn.microsoft.com/en-us/graph/sdks/create-client?from=snippets&tabs=csharp
var result = await graphClient.Me.Messages.PostAsync(requestBody);
// Code snippets are only available for the latest version. Current version is 6.x
GraphServiceClient graphClient = new GraphServiceClient(requestAdapter);
Message message = new Message();
message.setSubject("Annual review");
ItemBody body = new ItemBody();
body.setContentType(BodyType.Html);
body.setContent("You should be proud!");
message.setBody(body);
LinkedList<Recipient> toRecipients = new LinkedList<Recipient>();
Recipient recipient = new Recipient();
EmailAddress emailAddress = new EmailAddress();
emailAddress.setAddress("rufus@contoso.com");
recipient.setEmailAddress(emailAddress);
toRecipients.add(recipient);
message.setToRecipients(toRecipients);
LinkedList<Extension> extensions = new LinkedList<Extension>();
OpenTypeExtension extension = new OpenTypeExtension();
extension.setOdataType("microsoft.graph.openTypeExtension");
extension.setExtensionName("Com.Contoso.Referral");
HashMap<String, Object> additionalData = new HashMap<String, Object>();
additionalData.put("companyName", "Wingtip Toys");
additionalData.put("expirationDate", "2015-12-30T11:00:00.000Z");
additionalData.put("dealValue", 10000);
extension.setAdditionalData(additionalData);
extensions.add(extension);
message.setExtensions(extensions);
Message result = graphClient.me().messages().post(message);
The following example shows the response for the first example. The response body includes properties of the new message, and the following for the new extension:
The id property with the fully qualified name of microsoft.graph.openTypeExtension.Com.Contoso.Referral.
The default property extensionName specified in the request.
The custom data specified in the request stored as three custom properties.
Note: The response object shown here might be shortened for readability.
// Code snippets are only available for the latest version. Current version is 5.x
// Dependencies
using Microsoft.Graph.Models;
var requestBody = new OpenTypeExtension
{
OdataType = "microsoft.graph.openTypeExtension",
ExtensionName = "Com.Contoso.Referral",
AdditionalData = new Dictionary<string, object>
{
{
"companyName" , "Wingtip Toys"
},
{
"dealValue" , 500050
},
{
"expirationDate" , "2015-12-03T10:00:00.000Z"
},
},
};
// To initialize your graphClient, see https://learn.microsoft.com/en-us/graph/sdks/create-client?from=snippets&tabs=csharp
var result = await graphClient.Me.Messages["{message-id}"].Extensions.PostAsync(requestBody);
// Code snippets are only available for the latest major version. Current major version is $v1.*
// Dependencies
import (
"context"
msgraphsdk "github.com/microsoftgraph/msgraph-sdk-go"
graphmodels "github.com/microsoftgraph/msgraph-sdk-go/models"
//other-imports
)
requestBody := graphmodels.NewExtension()
extensionName := "Com.Contoso.Referral"
requestBody.SetExtensionName(&extensionName)
additionalData := map[string]interface{}{
"companyName" : "Wingtip Toys",
"dealValue" : int32(500050) ,
"expirationDate" : "2015-12-03T10:00:00.000Z",
}
requestBody.SetAdditionalData(additionalData)
// To initialize your graphClient, see https://learn.microsoft.com/en-us/graph/sdks/create-client?from=snippets&tabs=go
extensions, err := graphClient.Me().Messages().ByMessageId("message-id").Extensions().Post(context.Background(), requestBody, nil)
// Code snippets are only available for the latest version. Current version is 6.x
GraphServiceClient graphClient = new GraphServiceClient(requestAdapter);
OpenTypeExtension extension = new OpenTypeExtension();
extension.setOdataType("microsoft.graph.openTypeExtension");
extension.setExtensionName("Com.Contoso.Referral");
HashMap<String, Object> additionalData = new HashMap<String, Object>();
additionalData.put("companyName", "Wingtip Toys");
additionalData.put("dealValue", 500050);
additionalData.put("expirationDate", "2015-12-03T10:00:00.000Z");
extension.setAdditionalData(additionalData);
Extension result = graphClient.me().messages().byMessageId("{message-id}").extensions().post(extension);
# Code snippets are only available for the latest version. Current version is 1.x
from msgraph import GraphServiceClient
from msgraph.generated.models.open_type_extension import OpenTypeExtension
# To initialize your graph_client, see https://learn.microsoft.com/en-us/graph/sdks/create-client?from=snippets&tabs=python
request_body = OpenTypeExtension(
odata_type = "microsoft.graph.openTypeExtension",
extension_name = "Com.Contoso.Referral",
additional_data = {
"company_name" : "Wingtip Toys",
"deal_value" : 500050,
"expiration_date" : "2015-12-03T10:00:00.000Z",
}
)
result = await graph_client.me.messages.by_message_id('message-id').extensions.post(request_body)
// Code snippets are only available for the latest version. Current version is 5.x
// Dependencies
using Microsoft.Graph.Models;
var requestBody = new OpenTypeExtension
{
OdataType = "microsoft.graph.openTypeExtension",
ExtensionName = "Com.Contoso.Deal",
AdditionalData = new Dictionary<string, object>
{
{
"companyName" , "Alpine Skis"
},
{
"dealValue" , 1010100
},
{
"expirationDate" , "2015-07-03T13:04:00.000Z"
},
},
};
// To initialize your graphClient, see https://learn.microsoft.com/en-us/graph/sdks/create-client?from=snippets&tabs=csharp
var result = await graphClient.Groups["{group-id}"].Events["{event-id}"].Extensions.PostAsync(requestBody);
// Code snippets are only available for the latest major version. Current major version is $v1.*
// Dependencies
import (
"context"
msgraphsdk "github.com/microsoftgraph/msgraph-sdk-go"
graphmodels "github.com/microsoftgraph/msgraph-sdk-go/models"
//other-imports
)
requestBody := graphmodels.NewExtension()
extensionName := "Com.Contoso.Deal"
requestBody.SetExtensionName(&extensionName)
additionalData := map[string]interface{}{
"companyName" : "Alpine Skis",
"dealValue" : int32(1010100) ,
"expirationDate" : "2015-07-03T13:04:00.000Z",
}
requestBody.SetAdditionalData(additionalData)
// To initialize your graphClient, see https://learn.microsoft.com/en-us/graph/sdks/create-client?from=snippets&tabs=go
extensions, err := graphClient.Groups().ByGroupId("group-id").Events().ByEventId("event-id").Extensions().Post(context.Background(), requestBody, nil)
// Code snippets are only available for the latest version. Current version is 6.x
GraphServiceClient graphClient = new GraphServiceClient(requestAdapter);
OpenTypeExtension extension = new OpenTypeExtension();
extension.setOdataType("microsoft.graph.openTypeExtension");
extension.setExtensionName("Com.Contoso.Deal");
HashMap<String, Object> additionalData = new HashMap<String, Object>();
additionalData.put("companyName", "Alpine Skis");
additionalData.put("dealValue", 1010100);
additionalData.put("expirationDate", "2015-07-03T13:04:00.000Z");
extension.setAdditionalData(additionalData);
Extension result = graphClient.groups().byGroupId("{group-id}").events().byEventId("{event-id}").extensions().post(extension);
# Code snippets are only available for the latest version. Current version is 1.x
from msgraph import GraphServiceClient
from msgraph.generated.models.open_type_extension import OpenTypeExtension
# To initialize your graph_client, see https://learn.microsoft.com/en-us/graph/sdks/create-client?from=snippets&tabs=python
request_body = OpenTypeExtension(
odata_type = "microsoft.graph.openTypeExtension",
extension_name = "Com.Contoso.Deal",
additional_data = {
"company_name" : "Alpine Skis",
"deal_value" : 1010100,
"expiration_date" : "2015-07-03T13:04:00.000Z",
}
)
result = await graph_client.groups.by_group_id('group-id').events.by_event_id('event-id').extensions.post(request_body)
Example 4: Create an extension in a new group post
Request
The following example creates an extension in a new group post, using the same reply action call to an existing group post. The reply action
creates a new post, and a new extension embedded in the post. The request body includes a post property, which in turn contains
the body of the new post, and the following data for the new extension:
The type microsoft.graph.openTypeExtension.
The extension name "Com.Contoso.HR".
Additional data to be stored as three custom properties in the JSON payload: companyName, expirationDate, and the array of strings topPicks.
// Code snippets are only available for the latest version. Current version is 5.x
// Dependencies
using Microsoft.Graph.Groups.Item.Threads.Item.Posts.Item.Reply;
using Microsoft.Graph.Models;
var requestBody = new ReplyPostRequestBody
{
Post = new Post
{
Body = new ItemBody
{
ContentType = BodyType.Html,
Content = "<html><body><div><div><div><div>When and where? </div></div></div></div></body></html>",
},
Extensions = new List<Extension>
{
new OpenTypeExtension
{
OdataType = "microsoft.graph.openTypeExtension",
ExtensionName = "Com.Contoso.HR",
AdditionalData = new Dictionary<string, object>
{
{
"companyName" , "Contoso"
},
{
"expirationDate" , "2015-07-03T13:04:00.000Z"
},
{
"topPicks" , new List<string>
{
"Employees only",
"Add spouse or guest",
"Add family",
}
},
},
},
},
},
};
// To initialize your graphClient, see https://learn.microsoft.com/en-us/graph/sdks/create-client?from=snippets&tabs=csharp
await graphClient.Groups["{group-id}"].Threads["{conversationThread-id}"].Posts["{post-id}"].Reply.PostAsync(requestBody);
// Code snippets are only available for the latest version. Current version is 6.x
GraphServiceClient graphClient = new GraphServiceClient(requestAdapter);
com.microsoft.graph.groups.item.threads.item.posts.item.reply.ReplyPostRequestBody replyPostRequestBody = new com.microsoft.graph.groups.item.threads.item.posts.item.reply.ReplyPostRequestBody();
Post post = new Post();
ItemBody body = new ItemBody();
body.setContentType(BodyType.Html);
body.setContent("<html><body><div><div><div><div>When and where? </div></div></div></div></body></html>");
post.setBody(body);
LinkedList<Extension> extensions = new LinkedList<Extension>();
OpenTypeExtension extension = new OpenTypeExtension();
extension.setOdataType("microsoft.graph.openTypeExtension");
extension.setExtensionName("Com.Contoso.HR");
HashMap<String, Object> additionalData = new HashMap<String, Object>();
additionalData.put("companyName", "Contoso");
additionalData.put("expirationDate", "2015-07-03T13:04:00.000Z");
LinkedList<String> topPicks = new LinkedList<String>();
topPicks.add("Employees only");
topPicks.add("Add spouse or guest");
topPicks.add("Add family");
additionalData.put("topPicks", topPicks);
extension.setAdditionalData(additionalData);
extensions.add(extension);
post.setExtensions(extensions);
replyPostRequestBody.setPost(post);
graphClient.groups().byGroupId("{group-id}").threads().byConversationThreadId("{conversationThread-id}").posts().byPostId("{post-id}").reply().post(replyPostRequestBody);
# Code snippets are only available for the latest version. Current version is 1.x
from msgraph import GraphServiceClient
from msgraph.generated.groups.item.threads.item.posts.item.reply.reply_post_request_body import ReplyPostRequestBody
from msgraph.generated.models.post import Post
from msgraph.generated.models.item_body import ItemBody
from msgraph.generated.models.body_type import BodyType
from msgraph.generated.models.extension import Extension
from msgraph.generated.models.open_type_extension import OpenTypeExtension
# To initialize your graph_client, see https://learn.microsoft.com/en-us/graph/sdks/create-client?from=snippets&tabs=python
request_body = ReplyPostRequestBody(
post = Post(
body = ItemBody(
content_type = BodyType.Html,
content = "<html><body><div><div><div><div>When and where? </div></div></div></div></body></html>",
),
extensions = [
OpenTypeExtension(
odata_type = "microsoft.graph.openTypeExtension",
extension_name = "Com.Contoso.HR",
additional_data = {
"company_name" : "Contoso",
"expiration_date" : "2015-07-03T13:04:00.000Z",
"top_picks" : [
"Employees only",
"Add spouse or guest",
"Add family",
],
}
),
],
),
)
await graph_client.groups.by_group_id('group-id').threads.by_conversation_thread_id('conversationThread-id').posts.by_post_id('post-id').reply.post(request_body)
Example 5: Create an extension in a new group post using POST operation
Request 5
The following example creates an extension in a new group post using the same POST operation to create a conversation. The POST operation
creates a new conversation, thread and post, and a new extension embedded in the post. The request body includes the
Topic and Threads properties, and a child post object for the new conversation. The post object
in turn contains the body of the new post, and the following data for the extension:
The type microsoft.graph.openTypeExtension.
The extension name "Com.Contoso.HR".
Additional data to be stored as three custom properties in the JSON payload: companyName, expirationDate, and the array of strings topPicks.
// Code snippets are only available for the latest version. Current version is 5.x
// Dependencies
using Microsoft.Graph.Models;
var requestBody = new Conversation
{
Topic = "Does anyone have a second?",
Threads = new List<ConversationThread>
{
new ConversationThread
{
Posts = new List<Post>
{
new Post
{
Body = new ItemBody
{
ContentType = BodyType.Html,
Content = "This is urgent!",
},
Extensions = new List<Extension>
{
new OpenTypeExtension
{
OdataType = "microsoft.graph.openTypeExtension",
ExtensionName = "Com.Contoso.Benefits",
AdditionalData = new Dictionary<string, object>
{
{
"companyName" , "Contoso"
},
{
"expirationDate" , "2016-08-03T11:00:00.000Z"
},
{
"topPicks" , new List<string>
{
"Employees only",
"Add spouse or guest",
"Add family",
}
},
},
},
},
},
},
},
},
};
// To initialize your graphClient, see https://learn.microsoft.com/en-us/graph/sdks/create-client?from=snippets&tabs=csharp
var result = await graphClient.Groups["{group-id}"].Conversations.PostAsync(requestBody);
// Code snippets are only available for the latest version. Current version is 6.x
GraphServiceClient graphClient = new GraphServiceClient(requestAdapter);
Conversation conversation = new Conversation();
conversation.setTopic("Does anyone have a second?");
LinkedList<ConversationThread> threads = new LinkedList<ConversationThread>();
ConversationThread conversationThread = new ConversationThread();
LinkedList<Post> posts = new LinkedList<Post>();
Post post = new Post();
ItemBody body = new ItemBody();
body.setContentType(BodyType.Html);
body.setContent("This is urgent!");
post.setBody(body);
LinkedList<Extension> extensions = new LinkedList<Extension>();
OpenTypeExtension extension = new OpenTypeExtension();
extension.setOdataType("microsoft.graph.openTypeExtension");
extension.setExtensionName("Com.Contoso.Benefits");
HashMap<String, Object> additionalData = new HashMap<String, Object>();
additionalData.put("companyName", "Contoso");
additionalData.put("expirationDate", "2016-08-03T11:00:00.000Z");
LinkedList<String> topPicks = new LinkedList<String>();
topPicks.add("Employees only");
topPicks.add("Add spouse or guest");
topPicks.add("Add family");
additionalData.put("topPicks", topPicks);
extension.setAdditionalData(additionalData);
extensions.add(extension);
post.setExtensions(extensions);
posts.add(post);
conversationThread.setPosts(posts);
threads.add(conversationThread);
conversation.setThreads(threads);
Conversation result = graphClient.groups().byGroupId("{group-id}").conversations().post(conversation);
# Code snippets are only available for the latest version. Current version is 1.x
from msgraph import GraphServiceClient
from msgraph.generated.models.conversation import Conversation
from msgraph.generated.models.conversation_thread import ConversationThread
from msgraph.generated.models.post import Post
from msgraph.generated.models.item_body import ItemBody
from msgraph.generated.models.body_type import BodyType
from msgraph.generated.models.extension import Extension
from msgraph.generated.models.open_type_extension import OpenTypeExtension
# To initialize your graph_client, see https://learn.microsoft.com/en-us/graph/sdks/create-client?from=snippets&tabs=python
request_body = Conversation(
topic = "Does anyone have a second?",
threads = [
ConversationThread(
posts = [
Post(
body = ItemBody(
content_type = BodyType.Html,
content = "This is urgent!",
),
extensions = [
OpenTypeExtension(
odata_type = "microsoft.graph.openTypeExtension",
extension_name = "Com.Contoso.Benefits",
additional_data = {
"company_name" : "Contoso",
"expiration_date" : "2016-08-03T11:00:00.000Z",
"top_picks" : [
"Employees only",
"Add spouse or guest",
"Add family",
],
}
),
],
),
],
),
],
)
result = await graph_client.groups.by_group_id('group-id').conversations.post(request_body)
The following example shows the response, which contains the new conversation and a thread ID. This new thread contains an automatically created post, which in turn contains the new extension.
Note: The response object shown here might be shortened for readability.
To get the new extension, first get all the posts in this
thread, and initially there should be only one. Then apply the post ID and the extension name Com.Contoso.Benefits to
get the extension.