> ## 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. # Create Server Backfill Ticket > Create a backfill matchmaking ticket as a server. A backfill ticket represents an ongoing game. The matchmaking service automatically starts matching the backfill ticket against other matchmaking tickets. Backfill tickets cannot match with other backfill tickets. ## Error codes This operation may return the following PlayFab errors: | Error | Code | | --- | --- | | MatchmakingAttributeInvalid | 2046 | | MatchmakingBadRequest | 2059 | | MatchmakingEntityInvalid | 2001 | | MatchmakingMemberProfileInvalid | 2032 | | MatchmakingNumberOfPlayersInTicketTooLarge | 2044 | | MatchmakingPlayerAttributesInvalid | 2002 | | MatchmakingPlayerAttributesTooLarge | 2043 | | MatchmakingQueueNotFound | 2016 | | MatchmakingRateLimitExceeded | 2054 | | MatchmakingTicketMembershipLimitExceeded | 2055 | | MatchmakingUnauthorized | 2056 | ## OpenAPI ````yaml post /Match/CreateServerBackfillTicket openapi: 3.0.0 info: version: '260922' title: PlayFab Multiplayer API description: >- API methods for managing multiplayer servers. API methods for managing parties. The lobby service helps players group together to play multiplayer games. It is often used as a rendezvous point for players to share connection information. The TrueSkill service helps titles to estimate a player's skill based on their match results. The player skill values from this service are commonly used by a matchmaking service to provide players with balanced matches. 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: Lobby description: '' - name: Matchmaking description: Matchmaking APIs - name: Matchmaking Admin description: Matchmaking Admin APIs - name: MultiplayerServer description: Multiplayer Server APIs - name: PubSub description: PlayFab PubSub APIs - name: TrueSkill description: TrueSkill APIs - name: TrueSkill Admin description: TrueSkill Admin APIs paths: /Match/CreateServerBackfillTicket: post: tags: - Matchmaking summary: Create Server Backfill Ticket description: > Create a backfill matchmaking ticket as a server. A backfill ticket represents an ongoing game. The matchmaking service automatically starts matching the backfill ticket against other matchmaking tickets. Backfill tickets cannot match with other backfill tickets. ## Error codes This operation may return the following PlayFab errors: | Error | Code | | --- | --- | | MatchmakingAttributeInvalid | 2046 | | MatchmakingBadRequest | 2059 | | MatchmakingEntityInvalid | 2001 | | MatchmakingMemberProfileInvalid | 2032 | | MatchmakingNumberOfPlayersInTicketTooLarge | 2044 | | MatchmakingPlayerAttributesInvalid | 2002 | | MatchmakingPlayerAttributesTooLarge | 2043 | | MatchmakingQueueNotFound | 2016 | | MatchmakingRateLimitExceeded | 2054 | | MatchmakingTicketMembershipLimitExceeded | 2055 | | MatchmakingUnauthorized | 2056 | operationId: CreateServerBackfillTicket requestBody: content: application/json: schema: $ref: '#/components/schemas/CreateServerBackfillTicketRequest' description: >- The server specifies all the members, their teams and their attributes, and the server details if applicable. responses: '200': $ref: '#/components/responses/CreateServerBackfillTicketResult' '400': $ref: '#/components/responses/ApiErrorWrapper' security: - EntityToken: [] components: schemas: CreateServerBackfillTicketRequest: description: >- The server specifies all the members, their teams and their attributes, and the server details if applicable. type: object properties: CustomTags: description: >- The optional custom tags associated with the request (e.g. build number, external trace identifiers, etc.). type: object GiveUpAfterSeconds: description: How long to attempt matching this ticket in seconds. type: number x-actualtype: int32 Members: description: >- The users who will be part of this ticket, along with their team assignments. type: array items: $ref: '#/components/schemas/MatchmakingPlayerWithTeamAssignment' x-isclass: true QueueName: description: The Id of a match queue. type: string ServerDetails: allOf: - $ref: '#/components/schemas/ServerDetails' description: The details of the server the members are connected to. required: - Members - GiveUpAfterSeconds - QueueName example: Members: [] GiveUpAfterSeconds: 100 ServerDetails: IPV4Address: 10.250.24.54 Ports: - Name: PortName Num: 1243 Region: WestUS Fqdn: vm.azure.cloudapp.net ServerId: 359e4634-7c8f-4d44-87a5-f3a876aac6c0 QueueName: custom123 MatchmakingPlayerWithTeamAssignment: description: A player in a created matchmaking match with a team assignment. type: object properties: Attributes: allOf: - $ref: '#/components/schemas/MatchmakingPlayerAttributes' description: >- The user's attributes custom to the title. These attributes will be null unless the request has ReturnMemberAttributes flag set to true. Entity: allOf: - $ref: '#/components/schemas/EntityKey' description: The entity key of the matchmaking user. TeamId: description: The Id of the team the User is assigned to. type: string required: - Entity ServerDetails: type: object properties: Fqdn: description: >- The fully qualified domain name of the virtual machine that is hosting this multiplayer server. type: string IPV4Address: description: >- The IPv4 address of the virtual machine that is hosting this multiplayer server. type: string Ports: description: The ports the multiplayer server uses. type: array items: $ref: '#/components/schemas/Port' x-isclass: true Region: description: The server's region. type: string ServerId: description: The string server ID of the multiplayer server generated by PlayFab. type: string example: IPV4Address: 10.250.24.54 Ports: - Name: PortName Num: 1243 Region: WestUS Fqdn: vm.azure.cloudapp.net ServerId: 359e4634-7c8f-4d44-87a5-f3a876aac6c0 CreateServerBackfillTicketResult: type: object properties: TicketId: description: The Id of the ticket to find a match for. type: string required: - TicketId example: TicketId: 1c4b0daa-150e-47ae-9923-d770c0f9b07c 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 MatchmakingPlayerAttributes: description: The matchmaking attributes for a user. type: object properties: DataObject: description: A data object representing a user's attributes. type: object EscapedDataObject: description: An escaped data object representing a user's attributes. type: string EntityKey: description: >- Combined entity type and ID structure which uniquely identifies a single entity. type: object properties: Id: description: Unique ID of the entity. type: string Type: description: >- Entity type. See https://learn.microsoft.com/gaming/playfab/features/data/entities/available-built-in-entity-types type: string required: - Id Port: type: object properties: Name: description: The name for the port. type: string Num: description: The number for the port. type: number x-actualtype: int32 Protocol: allOf: - $ref: '#/components/schemas/ProtocolType' description: The protocol for the port. required: - Name - Num - Protocol ProtocolType: type: string enum: - TCP - UDP responses: CreateServerBackfillTicketResult: 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/CreateServerBackfillTicketResult' example: code: 200 status: OK data: TicketId: 1c4b0daa-150e-47ae-9923-d770c0f9b07c ApiErrorWrapper: description: This is the outer wrapper for all responses with errors content: application/json: schema: $ref: '#/components/schemas/ApiErrorWrapper' securitySchemes: EntityToken: type: apiKey in: header name: X-EntityToken description: >- This API requires an Entity Session Token, available from the Entity GetEntityToken method. ```` ## Related topics - [Create Server Backfill Ticket](/api-reference/matchmaking/create-server-backfill-ticket.md) - [CreateServerBackfillTicket](/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/PlayFabMultiplayer.PlayFabMultiplayerServer/CreateServerBackfillTicket.md) - [PFMultiplayerCreateServerBackfillTicket](/services/playfab/multiplayer/lobby/playfabmultiplayerreference-cpp/pfmatchmaking/functions/pfmultiplayercreateserverbackfillticket.md) - [Using Server Backfill Tickets - Multiplayer SDK](/services/playfab/multiplayer/matchmaking/backfill-tickets-multiplayer-sdk.md) - [Using Server Backfill Tickets - REST API](/services/playfab/multiplayer/matchmaking/backfill-tickets.md)