> ## Documentation Index > Fetch the complete documentation index at: https://docs.tic.io/llms.txt > Use this file to discover all available pages before exploring further. # Acknowledge a single event > Marks a single event as acknowledged by the caller with an optional note. Idempotent — re-acknowledging updates the note and the acknowledging user. Pro+ tier ## OpenAPI ````yaml post /watchlists/{id}/events/{eventId}/acknowledge openapi: 3.1.1 info: title: TIC Lens API description: "The TIC Lens API provides programmatic access to company, person, property, vehicle, and order data.\r\n\r\n## Authentication\r\n\r\nAll requests require an API key passed via the `x-api-key` header:\r\n\r\n```bash\r\ncurl -H \"x-api-key: YOUR_API_KEY\" https://lens-api.tic.io/companies/123\r\n```\r\n\r\nAPI keys are managed through the TIC Lens web application under **Settings → API Keys**.\r\n\r\n## Base URL\r\n\r\n| Environment | URL |\r\n|-------------|-----|\r\n| Production | `https://lens-api.tic.io` |\r\n\r\n## Feature Access\r\n\r\nEndpoints are gated by your subscription plan. If your plan does not include a feature, the endpoint will return `403 Forbidden`.\r\n\r\n## Rate Limits\r\n\r\nRate limits are applied per API key. If you exceed the limit, requests will return `429 Too Many Requests`.\r\n\r\n## Response Format\r\n\r\nAll responses are JSON. Null values are omitted from responses.\r\n" version: v1 servers: - url: https://lens-api.tic.io security: - ApiKey: [] tags: - name: Addresses - name: Bolagsverket - name: Brf - name: Companies - name: Documents - name: FlightImages - name: Free - name: Orders - name: OrdersExports - name: PaymentControl - name: PaymentControlImport - name: Persons - name: Properties - name: PublicSearch - name: SearchAutocomplete - name: Sentinel - name: ServingPermits - name: Team - name: Teams - name: Transportstyrelsen - name: Vehicles - name: WatchList paths: /watchlists/{id}/events/{eventId}/acknowledge: post: tags: - WatchList summary: Acknowledge a single event description: >- Marks a single event as acknowledged by the caller with an optional note. Idempotent — re-acknowledging updates the note and the acknowledging user. operationId: AcknowledgeWatchListEvent parameters: - name: id in: path description: Watchlist GUID required: true schema: type: string format: uuid - name: eventId in: path description: Event ID to acknowledge required: true schema: type: integer format: int32 requestBody: content: application/json-patch+json: schema: $ref: >- #/components/schemas/Ormeo_Web_Lens_Models_WatchList_AcknowledgeEvent_Request application/json: schema: $ref: >- #/components/schemas/Ormeo_Web_Lens_Models_WatchList_AcknowledgeEvent_Request text/json: schema: $ref: >- #/components/schemas/Ormeo_Web_Lens_Models_WatchList_AcknowledgeEvent_Request application/*+json: schema: $ref: >- #/components/schemas/Ormeo_Web_Lens_Models_WatchList_AcknowledgeEvent_Request responses: '200': description: Event acknowledged content: application/json: schema: $ref: >- #/components/schemas/Ormeo_Web_Lens_Models_WatchList_WatchListMemberEvent_Dto '404': description: Watchlist or event not found components: schemas: Ormeo_Web_Lens_Models_WatchList_AcknowledgeEvent_Request: type: object properties: note: type: - 'null' - string additionalProperties: false Ormeo_Web_Lens_Models_WatchList_WatchListMemberEvent_Dto: type: object properties: a_EventId: type: integer format: int32 b_WatchListMemberGuid: type: string format: uuid a_WatchListMemberEventType: $ref: '#/components/schemas/Ormeo_Library_Entities_WatchListMemberEventType' a_WatchListMemberSubType: type: - 'null' - string a_EventDate: type: string format: date-time a_SentAtUtc: type: - 'null' - string format: date-time a_AcknowledgedAtUtc: type: - 'null' - string format: date-time a_AcknowledgedByUserId: type: - 'null' - integer format: int32 u_AcknowledgedByFirstName: type: - 'null' - string u_AcknowledgedByLastName: type: - 'null' - string u_AcknowledgedByEmail: type: - 'null' - string a_AcknowledgedNote: type: - 'null' - string isAcknowledged: type: boolean readOnly: true b_CompanyId: type: - 'null' - integer format: int32 s_CompanyName: type: - 'null' - string c_CompanyRegistrationNumber: type: - 'null' - string b_PersonId: type: - 'null' - integer format: int32 p_FirstName: type: - 'null' - string p_LastName: type: - 'null' - string b_AddressId: type: - 'null' - integer format: int32 x_AddressLabel: type: - 'null' - string b_PropertyId: type: - 'null' - integer format: int32 l_PropertyLabel: type: - 'null' - string b_VehicleId: type: - 'null' - integer format: int32 vs_VehicleRegistreringsnummer: type: - 'null' - string additionalProperties: false Ormeo_Library_Entities_WatchListMemberEventType: enum: - companyAddress - companyName - companyStatus - companyRegistration - companyIntelligence - companyBeneficialOwner - companyDocument - companyWorkplace - companyPerson - companyRegisteredOffice - companyShareCapital - companyPurpose - companyDebtBalance - companyOrderToPayCase - companyFinancialDocument - companyCase - companyWorkplaceAddress - unused_Company4 - unused_Company5 - unused_Company6 - unused_Company7 - unused_Company8 - unused_Company9 - unused_Company10 - personAddress - personName - personIntelligence - personStatus - personCompany - unused_Person1 - unused_Person2 - unused_Person3 - unused_Person4 - unused_Person5 - unused_Person6 - unused_Person7 - unused_Person8 - unused_Person9 - unused_Person10 - propertyOwnershipChange - propertyMortageDeedChange - unused_Property1 - unused_Property2 - unused_Property3 - unused_Property4 - unused_Property5 - vehicleOwnerChange - vehicleUserChange - vehicleStatusChange - vehicleInspection - vehicleStolen - unused_Vehicle1 - unused_Vehicle2 - unused_Vehicle3 - unused_Vehicle4 - unused_Vehicle5 type: string securitySchemes: ApiKey: type: apiKey name: x-api-key in: header ````