> ## 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. # Modify Item Uses > _NOTE: This is a Legacy Economy API, and is in bugfix-only mode. All new Economy features are being developed only for version 2._ Modifies the number of remaining uses of a player's inventory item ## Error codes This operation may return the following PlayFab errors: | Error | Code | | --- | --- | | InvalidItemProperties | 1091 | | NoRemainingUses | 1062 | | ProductDisabledForTitle | 1609 | ## OpenAPI ````yaml /services/playfab/api-references/rest/server/server.openapi.json post /Server/ModifyItemUses openapi: 3.0.0 info: version: '260922' title: PlayFab Server API description: >- Provides functionality to allow external (developer-controlled) servers to interact with user inventories and data in a trusted manner, and to handle matchmaking and client connection orchestration 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: Analytics description: Analytics APIs - name: Authentication description: Authentication APIs - name: Character Data description: Character Data APIs - name: Characters description: Characters APIs - name: Content description: Content Service APIs - name: Friend List Management description: Friend List Management APIs - name: Matchmaking description: Matchmaking APIs - name: Platform Specific Methods description: Platform Specific Methods 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: 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 paths: /Server/ModifyItemUses: post: tags: - Player Item Management summary: Modify Item Uses description: > _NOTE: This is a Legacy Economy API, and is in bugfix-only mode. All new Economy features are being developed only for version 2._ Modifies the number of remaining uses of a player's inventory item ## Error codes This operation may return the following PlayFab errors: | Error | Code | | --- | --- | | InvalidItemProperties | 1091 | | NoRemainingUses | 1062 | | ProductDisabledForTitle | 1609 | operationId: ModifyItemUses requestBody: content: application/json: schema: $ref: '#/components/schemas/ModifyItemUsesRequest' description: >- This function can both add and remove uses of an inventory item. If the number of uses drops below zero, the item will be removed from active inventory. responses: '200': $ref: '#/components/responses/ModifyItemUsesResult' '400': $ref: '#/components/responses/ApiErrorWrapper' security: - SecretKey: [] components: schemas: ModifyItemUsesRequest: description: >- This function can both add and remove uses of an inventory item. If the number of uses drops below zero, the item will be removed from active inventory. type: object properties: CustomTags: description: >- The optional custom tags associated with the request (e.g. build number, external trace identifiers, etc.). type: object ItemInstanceId: description: Unique instance identifier of the item to be modified. type: string PlayFabId: description: PlayFab unique identifier of the user whose item is being modified. type: string UsesToAdd: description: Number of uses to add to the item. Can be negative to remove uses. type: number x-actualtype: int32 required: - PlayFabId - ItemInstanceId - UsesToAdd example: PlayFabId: '20394883' ItemInstanceId: '94585729' UsesToAdd: 1 ModifyItemUsesResult: type: object properties: ItemInstanceId: description: Unique instance identifier of the item with uses consumed. type: string RemainingUses: description: Number of uses remaining on the item. type: number x-actualtype: int32 required: - RemainingUses example: ItemInstanceId: '94585729' 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 responses: ModifyItemUsesResult: 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/ModifyItemUsesResult' example: code: 200 status: OK data: ItemInstanceId: '94585729' ApiErrorWrapper: description: This is the outer wrapper for all responses with errors content: application/json: schema: $ref: '#/components/schemas/ApiErrorWrapper' 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 - [Modify Item Uses](/services/playfab/api-references/rest/server/player-item-management/modify-item-uses.md) - [Using Player inventory](/services/playfab/player-progression/player-data/player-inventory.md) - [Profile Writes Meter API Description](/services/playfab/pricing/meters/profile-writes.md) - [Use XBOX Multiplayer Analysis Tool to inspect and modify network traffic](/tools/tools-services/live-xbox-multiplayer-analysis-tool.md) - [Grant Items To Users](/services/playfab/api-references/rest/server/player-item-management/grant-items-to-users.md)