> ## Documentation Index > Fetch the complete documentation index at: https://devdocs.xbox.com/llms.txt > Use this file to discover all available pages before exploring further. # Update User Data > Updates the title-specific custom data for the user which is readable and writable by the client ## OpenAPI ````yaml post /Admin/UpdateUserData openapi: 3.0.0 info: version: '260922' title: PlayFab Admin API description: >- APIs for managing title configurations, uploaded Game Server code executables, and user data termsOfService: https://playfab.com/terms/ contact: url: https://community.playfab.com/index.html license: name: Apache 2.0 url: https://github.com/PlayFab/API_Specs/blob/master/LICENSE servers: - url: https://{titleId}.playfabapi.com description: PlayFab title endpoint variables: titleId: default: your_title_id description: Your PlayFab title ID (hex). security: [] tags: - name: Account Management description: Account Management APIs - name: Authentication description: Authentication APIs - name: Characters description: Characters APIs - name: Content description: Content Service APIs - name: Custom Server Management description: Custom Server Management APIs - name: Matchmaking description: Matchmaking APIs - name: Player Data Management description: Player Data Management APIs - name: Player Item Management description: Player Item Management APIs - name: PlayStream description: PlayStream Management APIs - name: ScheduledTask description: Task management APIs - name: Segments description: Segment management APIs - name: Server-Side Cloud Script description: Server-Side Cloud Script APIs - name: Shared Group Data description: Shared Group Data APIs - name: Title-Wide Data Management description: Title-Wide Data Management APIs - name: Xbox Store description: Xbox Store APIs paths: /Admin/UpdateUserData: post: tags: - Player Data Management summary: Update User Data description: >- Updates the title-specific custom data for the user which is readable and writable by the client operationId: UpdateUserData requestBody: $ref: '#/components/requestBodies/UpdateUserDataRequest' responses: '200': $ref: '#/components/responses/UpdateUserDataResult' '400': $ref: '#/components/responses/ApiErrorWrapper' security: - SecretKey: [] components: requestBodies: UpdateUserDataRequest: content: application/json: schema: $ref: '#/components/schemas/UpdateUserDataRequest' description: >- This function performs an additive update of the arbitrary JSON object containing the custom data for the user. In updating the custom data object, keys which already exist in the object will have their values overwritten, while keys with null values will be removed. No other key-value pairs will be changed apart from those specified in the call. responses: UpdateUserDataResult: description: '' content: application/json: schema: type: object properties: code: type: integer description: >- The Http status code. If X-ReportErrorAsSuccess header is set to true, this will report the actual http error code. status: type: string description: The Http status code as a string. data: $ref: '#/components/schemas/UpdateUserDataResult' example: code: 200 status: OK data: DataVersion: 8 ApiErrorWrapper: description: This is the outer wrapper for all responses with errors content: application/json: schema: $ref: '#/components/schemas/ApiErrorWrapper' schemas: UpdateUserDataRequest: description: >- This function performs an additive update of the arbitrary JSON object containing the custom data for the user. In updating the custom data object, keys which already exist in the object will have their values overwritten, while keys with null values will be removed. No other key-value pairs will be changed apart from those specified in the call. type: object properties: CustomTags: description: >- The optional custom tags associated with the request (e.g. build number, external trace identifiers, etc.). type: object Data: description: >- Key-value pairs to be written to the custom data. Note that keys are trimmed of whitespace, are limited in size, and may not begin with a '!' character or be null. type: object KeysToRemove: description: >- Optional list of Data-keys to remove from UserData. Some SDKs cannot insert null-values into Data due to language constraints. Use this to delete the keys directly. type: array items: type: string Permission: allOf: - $ref: '#/components/schemas/UserDataPermission' description: >- Permission to be applied to all user data keys written in this request. Defaults to "private" if not set. PlayFabId: description: >- Unique PlayFab assigned ID of the user on whom the operation will be performed. type: string required: - PlayFabId example: PlayFabId: '2039475' Data: Class: Fighter Gender: Female Icon: Guard 3 Theme: Colorful Permission: Public UpdateUserDataResult: type: object properties: DataVersion: description: >- Indicates the current version of the data that has been set. This is incremented with every set call for that type of data (read-only, internal, etc). This version can be provided in Get calls to find updated data. type: number x-actualtype: uint32 required: - DataVersion example: DataVersion: 8 ApiErrorWrapper: description: The basic wrapper around every failed API response type: object properties: code: description: Numerical HTTP code type: integer status: description: String HTTP code type: string error: description: Playfab error code type: string errorCode: description: Numerical PlayFab error code type: integer errorMessage: description: Description for the PlayFab errorCode type: string errorDetails: description: Detailed description of individual issues with the request object type: object required: - code - errorCode UserDataPermission: description: >- Indicates whether a given data key is private (readable only by the player) or public (readable by all players). When a player makes a GetUserData request about another player, only keys marked Public will be returned. type: string enum: - Private - Public securitySchemes: SecretKey: type: apiKey in: header name: X-SecretKey description: >- This API requires a title secret key, available to title admins, from PlayFab Game Manager. ```` ## Related topics - [Update User Data](/api-reference/player-data-management/update-user-data.md) - [PFPlayerDataManagementUpdateUserDataResult](/services/playfab/api-references/c/pfplayerdatamanagementtypes/structs/pfplayerdatamanagementupdateuserdataresult.md) - [PFPlayerDataManagementServerUpdateUserDataAsync](/services/playfab/api-references/c/pfplayerdatamanagement/functions/pfplayerdatamanagementserverupdateuserdataasync.md) - [PFPlayerDataManagementClientUpdateUserDataRequest](/services/playfab/api-references/c/pfplayerdatamanagementtypes/structs/pfplayerdatamanagementclientupdateuserdatarequest.md) - [PFPlayerDataManagementServerUpdateUserDataRequest](/services/playfab/api-references/c/pfplayerdatamanagementtypes/structs/pfplayerdatamanagementserverupdateuserdatarequest.md)