> ## Documentation Index > Fetch the complete documentation index at: https://developer.qminder.com/llms.txt > Use this file to discover all available pages before exploring further. # Create an input field > Creates a new input field for a location. The client must generate a UUID for the input field ID. EMAIL and PHONE_NUMBER types are singletons — only one of each is allowed per location. ## OpenAPI ````yaml /api-reference/openapi.json post /input-fields openapi: 3.1.0 info: title: Qminder API version: '1.0' description: >- The Qminder API allows you to integrate queue management into your own applications. servers: - url: https://api.qminder.com security: - sec0: [] tags: - name: Locations description: Manage physical service locations - name: Lines description: Manage virtual queues within locations - name: Input Fields description: Manage custom data fields for locations - name: Tickets description: Manage visitor queue entries - name: Appointments description: Manage scheduled appointments - name: Users description: Manage user accounts and permissions - name: Webhooks description: Manage webhook subscriptions paths: /input-fields: post: tags: - Input Fields summary: Create an input field description: >- Creates a new input field for a location. The client must generate a UUID for the input field ID. EMAIL and PHONE_NUMBER types are singletons — only one of each is allowed per location. operationId: create-input-field parameters: - name: X-Qminder-API-Version in: header description: API version. Must be set to `2020-09-01`. required: true schema: type: string enum: - '2020-09-01' default: '2020-09-01' requestBody: required: true content: application/json: schema: type: object required: - id - location - type - isMandatoryBeforeAdded - isMandatoryBeforeServed - isMandatoryInRemoteSignIn - isVisibleInWaitingDrawer - isVisibleInServingDrawer - showInRemoteSignIn - visibleForLines properties: id: type: string format: uuid description: Client-generated UUID for the input field. location: type: object required: - id description: Location reference. properties: id: type: integer description: Location ID. type: type: string enum: - FIRST_NAME - LAST_NAME - EMAIL - PHONE_NUMBER - TEXT - SELECT - URL - DATE - NUMERIC description: Input field type. title: type: string description: >- Display title. Required for TEXT, SELECT, URL, DATE, and NUMERIC types. isMandatoryBeforeAdded: type: boolean description: Must be filled before ticket is added. isMandatoryBeforeServed: type: boolean description: Must be filled before ticket is served. isMandatoryInRemoteSignIn: type: boolean description: Must be filled in remote sign-in. isVisibleInWaitingDrawer: type: boolean description: Shown in the waiting drawer. isVisibleInServingDrawer: type: boolean description: Shown in the serving drawer. showInRemoteSignIn: type: boolean description: >- Show in remote sign-in. Always treated as false for URL fields. visibleForLines: type: array description: Lines this field applies to. Empty array means all lines. items: type: object properties: id: type: integer description: Line ID. visitorFacingTitle: type: string description: >- Title shown to visitors. Available for TEXT, SELECT, DATE, and NUMERIC types. multiSelect: type: boolean description: Allow multiple selections. Required for SELECT type. options: type: array description: Select options. Required for SELECT type. items: type: object required: - id - title properties: id: type: string format: uuid description: Client-generated UUID for the option. title: type: string description: Option display title. color: type: string description: Option color. constraints: type: object description: Numeric constraints. Available for NUMERIC type. required: - scale properties: min: type: number description: Minimum allowed value. max: type: number description: Maximum allowed value. scale: type: integer description: Number of decimal places. translations: type: array description: >- Translations. Available for TEXT, SELECT, URL, DATE, and NUMERIC types. items: type: object required: - languageCode properties: languageCode: type: string description: Language code (e.g. "fr", "es"). title: type: string description: Translated field title. visitorFacingTitle: type: string description: Translated visitor-facing title. isRequiredInAppointments: type: boolean description: >- Whether required in appointments. Available for LAST_NAME and EMAIL types. example: id: 550e8400-e29b-41d4-a716-446655440000 location: id: 12345 type: TEXT title: Reason for visit isMandatoryBeforeAdded: true isMandatoryBeforeServed: false isMandatoryInRemoteSignIn: false isVisibleInWaitingDrawer: true isVisibleInServingDrawer: true showInRemoteSignIn: true visibleForLines: [] responses: '201': description: Input field created successfully. Response body is empty. '400': description: Bad request — missing or invalid fields content: application/json: schema: type: object properties: code: type: string description: Error code. message: type: string description: Error message. examples: duplicate_options: summary: Duplicate SELECT option titles value: code: duplicate_items_in_request message: Duplicate option titles blank_translation: summary: Blank translation title value: code: parameter_invalid_blank message: Translation title must not be blank '404': description: Location not found content: application/json: schema: type: object properties: code: type: string message: type: string example: code: resource_missing message: Location not found '409': description: >- Conflict — duplicate input field ID, or singleton type already exists content: application/json: schema: type: object properties: code: type: string message: type: string example: code: input_field_duplicate message: Input field with this ID already exists components: securitySchemes: sec0: type: apiKey in: header name: X-Qminder-REST-API-Key x-default: yourbusinessapikey ````