> ## 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. # List the offerings a policy could change to > Returns the other offerings in the policy's scheme, each quoted for the caller: whether the change is allowed and why not, which way it moves (upgrade, downgrade or swap), and when it could take effect with what is due now. A member token is quoted under the scheme's member rules and notice period, and only the primary member may ask; with an organizer key nothing is ever due and member rules don't apply. Offerings the policy could never move to are left out. Pass releaseSeatIds, comma-separated, to quote with those secondary seats ending when the change takes effect. Returns 503 MEMBERSHIP_OFFERING_CHANGES_UNAVAILABLE while offering changes are switched off; retry later. > [!NOTE] > > This endpoint is in beta: its request and response contract can still change while it's being developed. ## OpenAPI ````yaml /openapi.json get /v0/membership-policies/{policyId}/offering-change-options 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: Membership x-group: Memberships description: >- Membership schemes, purchased policies and the seats on them, owned by your organizer. Policies are billing contracts; a seat is one person's place on a policy. - 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: Teams x-group: Teams description: >- Teams group participants of an event occurrence under a team program. Teams can be imported for participants whose bookings were imported. - 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. - name: Identity x-group: API key description: >- What your API key can reach. Available to every key, including scoped ones. paths: /v0/membership-policies/{policyId}/offering-change-options: get: tags: - Membership summary: List the offerings a policy could change to description: >- Returns the other offerings in the policy's scheme, each quoted for the caller: whether the change is allowed and why not, which way it moves (upgrade, downgrade or swap), and when it could take effect with what is due now. A member token is quoted under the scheme's member rules and notice period, and only the primary member may ask; with an organizer key nothing is ever due and member rules don't apply. Offerings the policy could never move to are left out. Pass releaseSeatIds, comma-separated, to quote with those secondary seats ending when the change takes effect. Returns 503 MEMBERSHIP_OFFERING_CHANGES_UNAVAILABLE while offering changes are switched off; retry later. parameters: - schema: type: string in: query name: releaseSeatIds required: false - schema: type: string pattern: ^[a-fA-F0-9]{24}$ in: path name: policyId required: true responses: '200': description: Default Response content: application/json: schema: $ref: '#/components/schemas/MembershipOfferingChangeOptions' '400': description: Default Response content: application/json: schema: type: object required: - code - statusCode - message properties: code: type: string enum: - MEMBERSHIP_RESOURCE_NOT_FOUND - MEMBERSHIP_INVALID_REQUEST - MEMBERSHIP_PORTAL_CONFIGURATION_REQUIRED - MEMBERSHIP_BILLING_UNAVAILABLE - MEMBERSHIP_FROZEN - MEMBERSHIP_ALREADY_CANCELLED - MEMBERSHIP_PRIMARY_MEMBER_ONLY - MEMBERSHIP_OFFERING_CHANGE_REFUSED - MEMBERSHIP_OFFERING_CHANGES_UNAVAILABLE - MEMBERSHIP_IDEMPOTENCY_KEY_REUSED - MEMBERSHIP_FEATURE_NOT_ENABLED - MEMBERSHIP_WAITLIST_ENTRY_NOT_SELECTABLE - MEMBERSHIP_WAITLIST_CHARGING_PAUSED description: >- Stable error identifier. RESOURCE_NOT_FOUND covers missing and foreign resources alike. INVALID_REQUEST covers malformed input or fields that cannot be edited. PORTAL_CONFIGURATION_REQUIRED requires account setup; BILLING_UNAVAILABLE means billing cannot be resolved or reached. FROZEN and ALREADY_CANCELLED are reserved for future lifecycle writes. PRIMARY_MEMBER_ONLY means only the primary member of the policy can do this. OFFERING_CHANGE_REFUSED means the scheme’s rules, the household or a pending change or cancellation don’t allow the offering change; reasons says which. OFFERING_CHANGES_UNAVAILABLE means offering changes are switched off for now; retry later. IDEMPOTENCY_KEY_REUSED means the Idempotency-Key was already used for a different request. FEATURE_NOT_ENABLED means the endpoint is restricted and not enabled for your organisation. WAITLIST_ENTRY_NOT_SELECTABLE means the waitlist entry was withdrawn or refused. WAITLIST_CHARGING_PAUSED means selection is paused; try again later. statusCode: type: integer message: type: string reasons: type: array items: type: string description: >- Only with OFFERING_CHANGE_REFUSED: each reason, such as NOT_PRIMARY_MEMBER, RULE_FORBIDS, LEAD_TIME_TOO_SHORT, SEATS_EXCEED_TARGET, PAYMENT_IN_PROGRESS, SWITCH_IN_PROGRESS, CANCELLATION_PENDING, TARGET_UNAVAILABLE or OTHER_SCHEME. More may be added. '404': description: Default Response content: application/json: schema: type: object required: - code - statusCode - message properties: code: type: string enum: - MEMBERSHIP_RESOURCE_NOT_FOUND - MEMBERSHIP_INVALID_REQUEST - MEMBERSHIP_PORTAL_CONFIGURATION_REQUIRED - MEMBERSHIP_BILLING_UNAVAILABLE - MEMBERSHIP_FROZEN - MEMBERSHIP_ALREADY_CANCELLED - MEMBERSHIP_PRIMARY_MEMBER_ONLY - MEMBERSHIP_OFFERING_CHANGE_REFUSED - MEMBERSHIP_OFFERING_CHANGES_UNAVAILABLE - MEMBERSHIP_IDEMPOTENCY_KEY_REUSED - MEMBERSHIP_FEATURE_NOT_ENABLED - MEMBERSHIP_WAITLIST_ENTRY_NOT_SELECTABLE - MEMBERSHIP_WAITLIST_CHARGING_PAUSED description: >- Stable error identifier. RESOURCE_NOT_FOUND covers missing and foreign resources alike. INVALID_REQUEST covers malformed input or fields that cannot be edited. PORTAL_CONFIGURATION_REQUIRED requires account setup; BILLING_UNAVAILABLE means billing cannot be resolved or reached. FROZEN and ALREADY_CANCELLED are reserved for future lifecycle writes. PRIMARY_MEMBER_ONLY means only the primary member of the policy can do this. OFFERING_CHANGE_REFUSED means the scheme’s rules, the household or a pending change or cancellation don’t allow the offering change; reasons says which. OFFERING_CHANGES_UNAVAILABLE means offering changes are switched off for now; retry later. IDEMPOTENCY_KEY_REUSED means the Idempotency-Key was already used for a different request. FEATURE_NOT_ENABLED means the endpoint is restricted and not enabled for your organisation. WAITLIST_ENTRY_NOT_SELECTABLE means the waitlist entry was withdrawn or refused. WAITLIST_CHARGING_PAUSED means selection is paused; try again later. statusCode: type: integer message: type: string reasons: type: array items: type: string description: >- Only with OFFERING_CHANGE_REFUSED: each reason, such as NOT_PRIMARY_MEMBER, RULE_FORBIDS, LEAD_TIME_TOO_SHORT, SEATS_EXCEED_TARGET, PAYMENT_IN_PROGRESS, SWITCH_IN_PROGRESS, CANCELLATION_PENDING, TARGET_UNAVAILABLE or OTHER_SCHEME. More may be added. '503': description: Default Response content: application/json: schema: type: object required: - code - statusCode - message properties: code: type: string enum: - MEMBERSHIP_RESOURCE_NOT_FOUND - MEMBERSHIP_INVALID_REQUEST - MEMBERSHIP_PORTAL_CONFIGURATION_REQUIRED - MEMBERSHIP_BILLING_UNAVAILABLE - MEMBERSHIP_FROZEN - MEMBERSHIP_ALREADY_CANCELLED - MEMBERSHIP_PRIMARY_MEMBER_ONLY - MEMBERSHIP_OFFERING_CHANGE_REFUSED - MEMBERSHIP_OFFERING_CHANGES_UNAVAILABLE - MEMBERSHIP_IDEMPOTENCY_KEY_REUSED - MEMBERSHIP_FEATURE_NOT_ENABLED - MEMBERSHIP_WAITLIST_ENTRY_NOT_SELECTABLE - MEMBERSHIP_WAITLIST_CHARGING_PAUSED description: >- Stable error identifier. RESOURCE_NOT_FOUND covers missing and foreign resources alike. INVALID_REQUEST covers malformed input or fields that cannot be edited. PORTAL_CONFIGURATION_REQUIRED requires account setup; BILLING_UNAVAILABLE means billing cannot be resolved or reached. FROZEN and ALREADY_CANCELLED are reserved for future lifecycle writes. PRIMARY_MEMBER_ONLY means only the primary member of the policy can do this. OFFERING_CHANGE_REFUSED means the scheme’s rules, the household or a pending change or cancellation don’t allow the offering change; reasons says which. OFFERING_CHANGES_UNAVAILABLE means offering changes are switched off for now; retry later. IDEMPOTENCY_KEY_REUSED means the Idempotency-Key was already used for a different request. FEATURE_NOT_ENABLED means the endpoint is restricted and not enabled for your organisation. WAITLIST_ENTRY_NOT_SELECTABLE means the waitlist entry was withdrawn or refused. WAITLIST_CHARGING_PAUSED means selection is paused; try again later. statusCode: type: integer message: type: string reasons: type: array items: type: string description: >- Only with OFFERING_CHANGE_REFUSED: each reason, such as NOT_PRIMARY_MEMBER, RULE_FORBIDS, LEAD_TIME_TOO_SHORT, SEATS_EXCEED_TARGET, PAYMENT_IN_PROGRESS, SWITCH_IN_PROGRESS, CANCELLATION_PENDING, TARGET_UNAVAILABLE or OTHER_SCHEME. More may be added. components: schemas: MembershipOfferingChangeOptions: title: MembershipOfferingChangeOptions type: object properties: options: type: array items: $ref: '#/components/schemas/MembershipOfferingChangeOption' required: - options additionalProperties: false description: >- The scheme's other offerings the policy could move to, each quoted for the caller. MembershipOfferingChangeOption: title: MembershipOfferingChangeOption type: object properties: offeringId: type: string tierTitle: type: - string - 'null' planTitle: type: - string - 'null' price: anyOf: - $ref: '#/components/schemas/MembershipOfferingChangeCyclePrice' - type: 'null' description: What it costs each cycle, as a renewal on it would bill. currentPrice: anyOf: - $ref: '#/components/schemas/MembershipOfferingChangeCyclePrice' - type: 'null' description: What the policy is billed each cycle now. eligible: type: boolean description: Whether the caller may move the policy onto this offering. refusals: type: array items: $ref: '#/components/schemas/MembershipOfferingChangeRefusal' direction: type: - string - 'null' description: UPGRADE, DOWNGRADE or SWAP when eligible. timingOptions: type: array items: $ref: '#/components/schemas/MembershipOfferingChangeTimingOption' required: - offeringId - tierTitle - planTitle - price - currentPrice - eligible - refusals - direction - timingOptions additionalProperties: false MembershipOfferingChangeCyclePrice: title: MembershipOfferingChangeCyclePrice type: object properties: amount: $ref: '#/components/schemas/MembershipMoney' intervalUnit: type: - string - 'null' description: day, week, month or year; null for a one-time price. intervalCount: type: - number - 'null' required: - amount - intervalUnit - intervalCount additionalProperties: false description: What a membership costs each cycle on an offering, booking fee included. MembershipOfferingChangeRefusal: title: MembershipOfferingChangeRefusal type: object properties: reason: type: string description: >- Such as NOT_PRIMARY_MEMBER, RULE_FORBIDS, SEATS_EXCEED_TARGET, PAYMENT_IN_PROGRESS or CANCELLATION_PENDING. More may be added. details: type: object additionalProperties: type: string description: What the reason carries, such as the scheme rule it broke. required: - reason - details additionalProperties: false description: Why the policy can't move to an offering. MembershipOfferingChangeTimingOption: title: MembershipOfferingChangeTimingOption type: object properties: timing: type: string enum: - NOW - AT_RENEWAL notBefore: type: - string - 'null' description: 'For AT_RENEWAL: send this as notBefore to land on effectiveAt.' format: date-time effectiveAt: type: string format: date-time amountDueNow: anyOf: - $ref: '#/components/schemas/MembershipMoney' - type: 'null' description: >- What the member pays before a change made now applies; null when nothing is due. required: - timing - notBefore - effectiveAt - amountDueNow additionalProperties: false description: When a change to an offering could take effect, and what it costs now. MembershipMoney: title: MembershipMoney type: object properties: value: type: number currencyCode: type: string required: - value - currencyCode additionalProperties: false description: Money in minor units, e.g. DKK 150 is value 15000. securitySchemes: bearerAuth: type: http scheme: bearer bearerFormat: JWT ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.