> ## Documentation Index > Fetch the complete documentation index at: https://partner-help.letsdothis.com/llms.txt > Use this file to discover all available pages before exploring further. # Import discount codes > Asynchronously imports a batch of discount codes. The whole batch is validated synchronously — either every row is accepted (202 with a job to poll) or nothing is (422 with every problem, aggregated by error class). Execution is per-row from there: one row failing never rejects the others. Imports are create-once per `code`: re-importing an existing code returns it untouched, reported as `alreadyImported`. Send an `Idempotency-Key` header to make the submission replayable: retrying the same key and body returns the original job; reusing a key with a different body is rejected (409). This endpoint is restricted and not generally available: organizations that have not been enabled receive a `403`. Contact your Let's Do This representative if you'd like access. ## OpenAPI ````yaml /openapi.json post /v0/discount-codes/import openapi: 3.1.0 info: title: Let's Do This API version: 0.1.0 description: > The full reference — getting started, pagination, error responses, rate limits and the changelog — lives at [partner-help.letsdothis.com/api-reference](https://partner-help.letsdothis.com/api-reference/overview). This page is the interactive OpenAPI view of the same specification. # Authentication Create an API key from **Settings** → **Credentials** in your Let's Do This account and send it as a bearer token: ```bash curl --request GET \ --url "https://api.letsdothis.com/v0/participants" \ --header "Authorization: Bearer YOUR-API-KEY" ``` Keep the key secret: it identifies your organization, so do not ship it in a website or native app. If a key is exposed, revoke it from the same section and create a replacement. # OpenAPI schema Download the [OpenAPI schema](https://api.letsdothis.com/documentation/json) to use with Postman or an OpenAPI client generator. servers: - url: https://api.letsdothis.com description: Production - url: https://api.staging.letsdothis.com description: Staging security: - bearerAuth: [] tags: - name: Events x-group: Events description: Events that participants can register for. - name: EventOccurrences x-group: Event occurrences description: >- Event occurrences scoped to the organizer associated with your Public API credentials. Unlike the public Events catalog, results are limited to your own events. - name: Races x-group: Races description: >- Races within an event occurrence. An event occurrence may have one or more races, for example a 5K and a 10K within the same race day. - name: Tickets x-group: Tickets description: Tickets that are available for events. - name: BookingForms x-group: Booking forms description: >- Booking forms define the questions a booker answers when registering for a ticket. A ticket usually references a single booking form, so expect zero or one, while a booking form may be shared across multiple tickets. - name: BookingFormFields x-group: Booking form fields description: >- Booking form fields are the individual questions on a booking form — their type, label, options, and whether an answer is required. A field can be reused across multiple forms. - name: Bookings x-group: Bookings description: >- Bookings are the transaction record for a registration. A booking may contain one or more participants (entries). - name: Participant x-group: Participants description: Participants are users who successfully booked an event. - name: LineItem x-group: Line items description: Financial details related to individual items within transactions. - name: AddOns x-group: Add-ons description: >- Organizer-owned products that can be purchased and allocated to participants. Imported products retain stable external identities. - name: DiscountCodes x-group: Discount codes description: >- Discount codes participants enter at checkout to reduce the price of a booking. - name: Credits x-group: Credits description: >- Credits are balances participants can spend at checkout, identified by their email address. - name: Referrals x-group: Referrals description: >- Referral programs, the referrers registered on them, and asynchronous imports of historical referrals. - name: Application x-group: Applications description: >- Applications are created when a user applies for tickets that are set up to require an application process, such as balloted or "Good For Age" entries. - name: Partner x-group: Partners description: >- Partners that were created by the organization who can have Reserved Entries assigned to them. - name: ReservedEntries x-group: Reserved entries description: >- Reserved Entries are entries that are reserved for a partner. After being assigned, the partner can then allocate these entries to participants. - name: Timing x-group: Timing description: >- Timing providers push bib numbers and bib-pack shipments back to Let's Do This for the startlist entries they received. Available to select timing partners only. paths: /v0/discount-codes/import: post: tags: - DiscountCodes summary: Import discount codes description: >- Asynchronously imports a batch of discount codes. The whole batch is validated synchronously — either every row is accepted (202 with a job to poll) or nothing is (422 with every problem, aggregated by error class). Execution is per-row from there: one row failing never rejects the others. Imports are create-once per `code`: re-importing an existing code returns it untouched, reported as `alreadyImported`. Send an `Idempotency-Key` header to make the submission replayable: retrying the same key and body returns the original job; reusing a key with a different body is rejected (409). requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/DiscountCodeImportRequest' responses: '202': description: Default Response content: application/json: schema: $ref: '#/components/schemas/DiscountCodeImportAccepted' '400': description: Bad request content: application/json: schema: description: Bad request type: object properties: statusCode: type: number enum: - 400 error: type: string message: type: string '409': description: Conflict content: application/json: schema: description: Conflict type: object properties: statusCode: type: number enum: - 409 error: type: string message: type: string '413': description: Payload too large content: application/json: schema: description: Payload too large type: object properties: statusCode: type: number enum: - 413 error: type: string message: type: string '422': description: Default Response content: application/json: schema: $ref: '#/components/schemas/DiscountCodeImportValidationFailure' '429': description: Rate limit exceeded headers: retry-after: schema: type: integer description: Seconds to wait before retrying the request. x-ratelimit-limit: schema: type: integer description: Requests permitted in the current window. x-ratelimit-remaining: schema: type: integer description: Requests still permitted in the current window. x-ratelimit-reset: schema: type: integer description: Seconds until the current window resets. content: application/json: schema: description: Rate limit exceeded type: object properties: statusCode: type: number enum: - 429 error: type: string message: type: string components: schemas: DiscountCodeImportRequest: title: DiscountCodeImportRequest type: object properties: discountCodes: type: array items: $ref: '#/components/schemas/DiscountCodeImportRow' description: The discount codes to import. minItems: 1 maxItems: 1000 required: - discountCodes additionalProperties: false description: >- An asynchronous discount code import request: the whole batch is accepted or none of it. The first row takes the defaults: it discounts entries only, once per transaction. The second widens what it reaches with `appliesTo`, which replaces the default rather than adding to it, and uses `appliesPer` to come off every entry in the basket instead of the basket as a whole. example: discountCodes: - code: FLEETFEET5 description: Fleet Feet post-race in-store incentive flatRate: 500 maxValue: 500 startDate: '2026-09-01T00:00:00Z' expiresAt: '2026-12-31T23:59:59Z' limitUsage: 1 limitUsagePerUser: 1 eventOccurrenceIds: - '21111177799' group: fleet-feet-2026 - code: EARLYBIRD15 percentage: 15 eventIds: - '268365' appliesTo: - TICKETS - BOOKING_FEE appliesPer: ENTRY DiscountCodeImportAccepted: title: DiscountCodeImportAccepted type: object properties: jobId: type: string description: The id of the queued import job. status: type: string enum: - queued required: - jobId - status additionalProperties: false description: The accepted import job. Poll the job endpoint for progress and results. example: jobId: 661718293a4b5c6d7e8f901a status: queued DiscountCodeImportValidationFailure: title: DiscountCodeImportValidationFailure type: object properties: error: type: string enum: - validation_failed message: type: string description: A human summary of the failure. totalRows: type: number description: How many rows the batch contained. rowsWithErrors: type: number description: How many rows had at least one error. errorCount: type: number description: How many errors were found in total. summary: type: array items: $ref: '#/components/schemas/DiscountCodeImportErrorSummary' errors: type: array items: $ref: '#/components/schemas/DiscountCodeImportRowErrors' truncated: type: boolean description: Whether `errors` was capped. `summary` is never capped. required: - error - message - totalRows - rowsWithErrors - errorCount - summary - errors - truncated additionalProperties: false description: >- The whole-batch validation failure: nothing was imported. `summary` is the load-bearing part — every error class, uncapped, ordered by frequency. `errors` carries capped per-row detail; `truncated` refers to `errors` only, never `summary`. DiscountCodeImportRow: title: DiscountCodeImportRow type: object properties: code: type: string description: >- The code participants enter at checkout. Codes are unique per organizer and stored uppercase; imports are create-once per code — re-importing an existing code returns it untouched, reported as `alreadyImported`. minLength: 1 maxLength: 128 description: type: string description: >- An internal description of the code, shown in the organizer dashboard. maxLength: 1024 percentage: type: integer description: >- The percentage discount the code applies. Exactly one of `percentage` or `flatRate` is required. minimum: 1 maximum: 100 flatRate: type: integer description: >- The fixed discount the code applies, in the minor unit of the event's currency (e.g. pence, cents). Exactly one of `percentage` or `flatRate` is required. `0` is allowed: it creates a tracking-only code that applies no discount. minimum: 0 maxValue: type: integer description: >- The maximum total value the code can discount, in the minor unit of the event's currency. minimum: 1 expiresAt: $ref: '#/components/schemas/ISODate' startDate: $ref: '#/components/schemas/ISODate' firstBookingOnly: type: boolean description: Whether the code only applies to a booker's first booking. limitUsage: type: integer description: How many times the code can be used in total. minimum: 1 limitUsagePerUser: type: integer description: How many times a single user can use the code. minimum: 1 limitUsagePerTransaction: type: integer description: >- How many entries a single transaction can apply the code to. Only a per-entry code can be capped this way, so supplying this requires `appliesPer` to be `ENTRY`. minimum: 1 eventIds: type: array items: type: string description: Restrict the code to these events. Omit to allow all of your events. minItems: 1 maxItems: 100 eventOccurrenceIds: type: array items: type: string description: Restrict the code to these event occurrences. Omit to allow all. minItems: 1 maxItems: 100 appliesTo: type: array items: $ref: '#/components/schemas/DiscountCodeAppliesTo' description: >- Which parts of the basket the code discounts. Defaults to `["TICKETS"]`, so an imported code comes off entries only. Supply the full set you want when a code should also reach fees, merchandise and add-ons, form items or memberships — the value replaces the default rather than adding to it. The discount is applied to every matching line item in the basket, so a code covering more of the basket discounts more of it. Cap the total with `maxValue`. minItems: 1 maxItems: 5 appliesPer: $ref: '#/components/schemas/DiscountCodeAppliesPer' group: type: string description: A free-form grouping label, shown in the organizer dashboard. maxLength: 256 required: - code additionalProperties: false description: One discount code to import. DiscountCodeImportErrorSummary: title: DiscountCodeImportErrorSummary type: object properties: code: type: string fieldId: type: string description: The row field the class relates to, when field-scoped. count: type: number description: How many times this class occurred across the batch. message: type: string description: A representative message for the class. examples: type: array items: $ref: '#/components/schemas/DiscountCodeImportErrorLocator' description: The first few occurrences, located. required: - code - count - message - examples additionalProperties: false description: One validation problem class, aggregated across the batch. DiscountCodeImportRowErrors: title: DiscountCodeImportRowErrors type: object properties: discountCode: type: string description: The `code` of the row. rowIndex: type: number description: The zero-based position of the row in `discountCodes`. errors: type: array items: $ref: '#/components/schemas/DiscountCodeImportErrorDetail' required: - rowIndex - errors additionalProperties: false description: The per-row detail of a failed validation, grouped by row. ISODate: title: ISODate type: string description: >- Represents a date and time in ISO 8601 format as a string. The string should follow the format `YYYY-MM-DDTHH:mm:ss.sssZ`, where: - `YYYY`: Four-digit year - `MM`: Two-digit month (01-12) - `DD`: Two-digit day of the month (01-31) - `T`: Delimiter indicating the start of the time component - `HH`: Two-digit hour in 24-hour format (00-23) - `mm`: Two-digit minutes (00-59) - `ss.sss`: Seconds with milliseconds (00.000-59.999) - `Z`: UTC timezone designator **Example:** To represent 11:30 AM on May 8th, 2026, the value would be: `"2026-05-08T11:30:00.000Z"`. example: '2026-05-08T11:30:00.000Z' DiscountCodeAppliesTo: title: DiscountCodeAppliesTo type: string enum: - TICKETS - BOOKING_FEE - MERCH_AND_ADDONS - FORM_ITEMS - MEMBERSHIPS description: >- The part of the basket a discount code applies to. These are the same categories the organizer dashboard offers, so a code created through the API and one created in the dashboard describe themselves the same way. `MERCH_AND_ADDONS` covers every merchandise and add-on category; `FORM_ITEMS` covers the remaining booking form items. DiscountCodeAppliesPer: title: DiscountCodeAppliesPer type: string enum: - TRANSACTION - ENTRY description: >- How often a discount code comes off a basket. These are the same two options the organizer dashboard offers as its discount type. `TRANSACTION` discounts the basket once, however many entries it holds. `ENTRY` discounts each participant's entry separately, so a basket of three entries is discounted three times. DiscountCodeImportErrorLocator: title: DiscountCodeImportErrorLocator type: object properties: discountCode: type: string description: The `code` of the offending row. rowIndex: type: number description: The zero-based position of the offending row in `discountCodes`. value: type: string description: The offending submitted value, when one exists. required: - rowIndex additionalProperties: false description: Where in the batch a validation error occurred. DiscountCodeImportErrorDetail: title: DiscountCodeImportErrorDetail type: object properties: code: type: string fieldId: type: string message: type: string required: - code - message additionalProperties: false description: One occurrence of a validation error. securitySchemes: bearerAuth: type: http scheme: bearer bearerFormat: JWT ````