> ## Documentation Index > Fetch the complete documentation index at: https://docs.floral.so/llms.txt > Use this file to discover all available pages before exploring further. # Mark attendance > Mark up to 500 registered participants as attended, no-show, or unknown before attendance is finalised. All or nothing: an unknown participant ID refuses the batch with 404, and a waitlisted or cancelled participant, or a finalised event, with 409 INVALID_STATE. ## OpenAPI ````yaml /openapi/public-v1-da.json post /api/v1/workspaces/{workspaceSlug}/events/{eventId}/attendance openapi: 3.1.0 info: description: >- Stable external API for relationship lookup, meeting intelligence, and event participation. title: Florals offentlige API version: 1.0.0 servers: - description: Produktion url: https://app.floral.so security: [] tags: - description: Søg på tværs af aktive virksomheder og personer. name: Søgning - description: Opret, hent, gennemgå, opdatér, arkivér og gendan virksomheder. name: Virksomheder - description: Opret, hent, gennemgå, opdatér, arkivér og gendan personer. name: Personer - description: Læs aktive offentlige definitioner af brugerdefinerede felter. name: Brugerdefinerede felter - description: Søg i normaliserede fakta fra det danske virksomhedsregister. name: Virksomhedsregister - description: Opret, hent og gennemgå mødebriefings. name: Briefings - description: Hent, gennemgå, kommentér og godkend mødereferater. name: Referater - description: >- List and inspect events, and finalise their attendance. Requires the Events add-on. name: Events - description: >- Register, list, inspect, and update event participants, mark attendance, and correct finalised attendance. Requires the Events add-on. name: Event participants paths: /api/v1/workspaces/{workspaceSlug}/events/{eventId}/attendance: post: tags: - Event participants summary: Mark attendance description: >- Mark up to 500 registered participants as attended, no-show, or unknown before attendance is finalised. All or nothing: an unknown participant ID refuses the batch with 404, and a waitlisted or cancelled participant, or a finalised event, with 409 INVALID_STATE. operationId: markEventAttendanceV1 parameters: - description: Slug for det arbejdsområde, adgangsoplysningen er bundet til. example: acme-nordic in: path name: workspaceSlug required: true schema: maxLength: 100 minLength: 1 pattern: ^[a-z0-9]+(?:-[a-z0-9]+)*$ type: string - description: Stable numeric event ID. example: 42 in: path name: eventId required: true schema: minimum: 1 type: integer - description: >- Valgfrit korrelations-id fra kalderen. Floral returnerer den anvendte værdi i X-Request-ID. example: 550e8400-e29b-41d4-a716-446655440000 in: header name: X-Request-ID required: false schema: maxLength: 128 minLength: 1 type: string - description: >- Påkrævet idempotensnøgle. Identiske nye forsøg på samme kanoniske kald gentager oprindelig status, body, ETag, Location og request-id i 24 timer. example: markEventAttendanceV1-20260816-001 in: header name: Idempotency-Key required: true schema: type: string minLength: 1 maxLength: 255 requestBody: content: application/json: example: participantIds: - 0f8b6c1e-3a52-4d6e-9b7a-2c4e5f6a7b8c - 5d2e8a41-7c3b-4f90-8e16-a9b0c1d2e3f4 state: ATTENDED schema: $ref: '#/components/schemas/EventAttendanceMarkRequest' description: >- Unique participant IDs of this event and the target state. Maximum 65536 bytes. required: true responses: '200': content: application/json: example: attendance: changedParticipantIds: - 0f8b6c1e-3a52-4d6e-9b7a-2c4e5f6a7b8c state: ATTENDED unchangedParticipantIds: - 5d2e8a41-7c3b-4f90-8e16-a9b0c1d2e3f4 schema: $ref: '#/components/schemas/EventAttendanceMarkResponse' description: Attendance marked headers: X-Content-Type-Options: description: Angiver altid nosniff ved JSON API-svar. schema: const: nosniff type: string X-RateLimit-Limit: description: Højeste antal kald i det aktuelle tidsvindue. schema: minimum: 1 type: integer X-RateLimit-Remaining: description: Resterende kald i det aktuelle tidsvindue. schema: minimum: 0 type: integer X-Request-ID: description: >- Stabilt korrelations-id for kaldet eller en idempotent gentagelse. schema: minLength: 1 type: string '400': content: application/json: example: error: code: INVALID_INPUT message: Kaldet indeholder ugyldige værdier. requestId: 550e8400-e29b-41d4-a716-446655440000 schema: allOf: - $ref: '#/components/schemas/ApiErrorResponse' properties: error: properties: code: enum: - INVALID_INPUT type: string required: - code type: object type: object description: 'Stabile fejl: INVALID_INPUT' headers: X-Content-Type-Options: description: Angiver altid nosniff ved JSON API-svar. schema: const: nosniff type: string X-RateLimit-Limit: description: Højeste antal kald i det aktuelle tidsvindue. schema: minimum: 1 type: integer X-RateLimit-Remaining: description: Resterende kald i det aktuelle tidsvindue. schema: minimum: 0 type: integer X-Request-ID: description: >- Stabilt korrelations-id for kaldet eller en idempotent gentagelse. schema: minLength: 1 type: string '401': content: application/json: example: error: code: UNAUTHENTICATED message: En gyldig bearer-adgangsoplysning er påkrævet. requestId: 550e8400-e29b-41d4-a716-446655440000 schema: allOf: - $ref: '#/components/schemas/ApiErrorResponse' properties: error: properties: code: enum: - UNAUTHENTICATED type: string required: - code type: object type: object description: 'Stabile fejl: UNAUTHENTICATED' headers: X-Content-Type-Options: description: Angiver altid nosniff ved JSON API-svar. schema: const: nosniff type: string X-RateLimit-Limit: description: Højeste antal kald i det aktuelle tidsvindue. schema: minimum: 1 type: integer X-RateLimit-Remaining: description: Resterende kald i det aktuelle tidsvindue. schema: minimum: 0 type: integer X-Request-ID: description: >- Stabilt korrelations-id for kaldet eller en idempotent gentagelse. schema: minLength: 1 type: string WWW-Authenticate: description: Udfordring til bearer-godkendelse. example: Bearer realm="floral-api" schema: type: string '403': content: application/json: example: error: code: FORBIDDEN message: Adgangsoplysningen giver ikke adgang til denne handling. requestId: 550e8400-e29b-41d4-a716-446655440000 schema: allOf: - $ref: '#/components/schemas/ApiErrorResponse' properties: error: properties: code: enum: - FORBIDDEN type: string required: - code type: object type: object description: 'Stabile fejl: FORBIDDEN' headers: X-Content-Type-Options: description: Angiver altid nosniff ved JSON API-svar. schema: const: nosniff type: string X-RateLimit-Limit: description: Højeste antal kald i det aktuelle tidsvindue. schema: minimum: 1 type: integer X-RateLimit-Remaining: description: Resterende kald i det aktuelle tidsvindue. schema: minimum: 0 type: integer X-Request-ID: description: >- Stabilt korrelations-id for kaldet eller en idempotent gentagelse. schema: minLength: 1 type: string '404': content: application/json: example: error: code: NOT_FOUND message: Ressourcen blev ikke fundet. requestId: 550e8400-e29b-41d4-a716-446655440000 schema: allOf: - $ref: '#/components/schemas/ApiErrorResponse' properties: error: properties: code: enum: - NOT_FOUND - FEATURE_DISABLED type: string required: - code type: object type: object description: 'Stabile fejl: NOT_FOUND, FEATURE_DISABLED' headers: X-Content-Type-Options: description: Angiver altid nosniff ved JSON API-svar. schema: const: nosniff type: string X-RateLimit-Limit: description: Højeste antal kald i det aktuelle tidsvindue. schema: minimum: 1 type: integer X-RateLimit-Remaining: description: Resterende kald i det aktuelle tidsvindue. schema: minimum: 0 type: integer X-Request-ID: description: >- Stabilt korrelations-id for kaldet eller en idempotent gentagelse. schema: minLength: 1 type: string '409': content: application/json: example: error: code: CONFLICT message: >- Den ønskede ændring er i konflikt med ressourcens aktuelle tilstand. requestId: 550e8400-e29b-41d4-a716-446655440000 schema: allOf: - $ref: '#/components/schemas/ApiErrorResponse' properties: error: properties: code: enum: - CONFLICT - INVALID_STATE - IDEMPOTENCY_CONFLICT type: string required: - code type: object type: object description: 'Stabile fejl: CONFLICT, INVALID_STATE, IDEMPOTENCY_CONFLICT' headers: X-Content-Type-Options: description: Angiver altid nosniff ved JSON API-svar. schema: const: nosniff type: string X-RateLimit-Limit: description: Højeste antal kald i det aktuelle tidsvindue. schema: minimum: 1 type: integer X-RateLimit-Remaining: description: Resterende kald i det aktuelle tidsvindue. schema: minimum: 0 type: integer X-Request-ID: description: >- Stabilt korrelations-id for kaldet eller en idempotent gentagelse. schema: minLength: 1 type: string '429': content: application/json: example: error: code: RATE_LIMITED message: For mange kald. Prøv igen om lidt. requestId: 550e8400-e29b-41d4-a716-446655440000 schema: allOf: - $ref: '#/components/schemas/ApiErrorResponse' properties: error: properties: code: enum: - RATE_LIMITED type: string required: - code type: object type: object description: 'Stabile fejl: RATE_LIMITED' headers: X-Content-Type-Options: description: Angiver altid nosniff ved JSON API-svar. schema: const: nosniff type: string X-RateLimit-Limit: description: Højeste antal kald i det aktuelle tidsvindue. schema: minimum: 1 type: integer X-RateLimit-Remaining: description: Resterende kald i det aktuelle tidsvindue. schema: minimum: 0 type: integer X-Request-ID: description: >- Stabilt korrelations-id for kaldet eller en idempotent gentagelse. schema: minLength: 1 type: string Retry-After: description: Sekunder til den aktuelle grænse nulstilles. schema: minimum: 1 type: integer '500': content: application/json: example: error: code: INTERNAL_ERROR message: Der opstod en uventet fejl. requestId: 550e8400-e29b-41d4-a716-446655440000 schema: allOf: - $ref: '#/components/schemas/ApiErrorResponse' properties: error: properties: code: enum: - INTERNAL_ERROR type: string required: - code type: object type: object description: 'Stabile fejl: INTERNAL_ERROR' headers: X-Content-Type-Options: description: Angiver altid nosniff ved JSON API-svar. schema: const: nosniff type: string X-RateLimit-Limit: description: Højeste antal kald i det aktuelle tidsvindue. schema: minimum: 1 type: integer X-RateLimit-Remaining: description: Resterende kald i det aktuelle tidsvindue. schema: minimum: 0 type: integer X-Request-ID: description: >- Stabilt korrelations-id for kaldet eller en idempotent gentagelse. schema: minLength: 1 type: string security: - bearerAuth: [] x-codeSamples: - label: cURL lang: Shell source: |- curl --request POST \ --url 'https://app.floral.so/api/v1/workspaces/acme-nordic/events/42/attendance' \ --header 'Authorization: Bearer $FLORAL_TOKEN' \ --header 'Idempotency-Key: markEventAttendanceV1-20260816-001' \ --header 'Content-Type: application/json' \ --data '{ "participantIds": [ "0f8b6c1e-3a52-4d6e-9b7a-2c4e5f6a7b8c", "5d2e8a41-7c3b-4f90-8e16-a9b0c1d2e3f4" ], "state": "ATTENDED" }' components: schemas: EventAttendanceMarkRequest: $schema: https://json-schema.org/draft/2020-12/schema type: object properties: participantIds: minItems: 1 maxItems: 500 type: array items: type: string format: uuid pattern: >- ^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$ uniqueItems: true state: type: string enum: - UNKNOWN - ATTENDED - NO_SHOW required: - participantIds - state additionalProperties: false EventAttendanceMarkResponse: $schema: https://json-schema.org/draft/2020-12/schema type: object properties: attendance: type: object properties: changedParticipantIds: maxItems: 500 type: array items: type: string format: uuid pattern: >- ^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$ state: type: string enum: - UNKNOWN - ATTENDED - NO_SHOW unchangedParticipantIds: maxItems: 500 type: array items: type: string format: uuid pattern: >- ^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$ required: - changedParticipantIds - state - unchangedParticipantIds additionalProperties: false required: - attendance additionalProperties: false ApiErrorResponse: additionalProperties: false properties: error: additionalProperties: false properties: code: enum: - CONFLICT - FEATURE_DISABLED - FORBIDDEN - IDEMPOTENCY_CONFLICT - INTERNAL_ERROR - INVALID_INPUT - INVALID_STATE - NOT_FOUND - PRECONDITION_REQUIRED - RATE_LIMITED - UNAUTHENTICATED - VERSION_CONFLICT type: string message: minLength: 1 type: string requestId: maxLength: 128 minLength: 1 type: string required: - code - message - requestId type: object required: - error type: object securitySchemes: bearerAuth: bearerFormat: Floral PAT description: >- Godkend med en personlig Floral-adgangsnøgle, der er bundet til ét arbejdsområde. scheme: bearer type: http ````