> ## Documentation Index
> Fetch the complete documentation index at: https://developers.hubspot.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

---
id: 2a120fce-b31c-42b1-b92c-876fcfad5709
---

# Update event by HubSpot ID

> Updates the details of an existing Marketing Event identified by its objectId, if it exists.

export const ScopesList = ({scopes = [], description = "This API requires one of the following scopes:"}) => {
  if (!scopes || scopes.length === 0) {
    return null;
  }
  const sortedScopes = scopes.sort((a, b) => a.localeCompare(b));
  return <div>
      <div className="text-sm mb-2">{description}</div>
      <div>
        {sortedScopes.map((scope, index) => <div key={index}>
            <code>
              <span className="text-xs">{scope}</span>
            </code>
          </div>)}
      </div>
    </div>;
};

export const SupportedProducts = ({marketing, sales, service, cms, data, commerce, marketingLevel, salesLevel, serviceLevel, cmsLevel, dataLevel, commerceLevel}) => {
  const translations = {
    description: "Requires one of the following products or higher.",
    productNames: {
      marketing: "Marketing Hub",
      sales: "Sales Hub",
      service: "Service Hub",
      cms: "Content Hub",
      data: "Data Hub",
      commerce: "Revenue Hub"
    },
    tiers: {
      free: "Free",
      starter: "Starter",
      professional: "Professional",
      enterprise: "Enterprise"
    }
  };
  const translateTier = tier => {
    if (!tier) return '';
    const lowerTier = tier.toLowerCase();
    return translations.tiers[lowerTier] || tier;
  };
  const products = [{
    name: marketing ? translations.productNames.marketing : '',
    level: translateTier(marketingLevel),
    icon: "https://mintlify-assets.b-cdn.net/Icons/marketing-bolt.svg",
    alt: "Marketing Hub"
  }, {
    name: sales ? translations.productNames.sales : '',
    level: translateTier(salesLevel),
    icon: "https://mintlify-assets.b-cdn.net/Icons/sales-star.svg",
    alt: "Sales Hub"
  }, {
    name: service ? translations.productNames.service : '',
    level: translateTier(serviceLevel),
    icon: "https://mintlify-assets.b-cdn.net/Icons/service-heart.svg",
    alt: "Service Hub"
  }, {
    name: cms ? translations.productNames.cms : '',
    level: translateTier(cmsLevel),
    icon: "https://mintlify-assets.b-cdn.net/Icons/content-play.svg",
    alt: "Content Hub"
  }, {
    name: data ? translations.productNames.data : '',
    level: translateTier(dataLevel),
    icon: "https://developers.hubspot.com/hubfs/Knowledge_Base_2023-24-25/subscription_key_icons/operations_icon.svg",
    alt: "Data Hub"
  }, {
    name: commerce ? translations.productNames.commerce : '',
    level: translateTier(commerceLevel),
    icon: "https://developers.hubspot.com/hubfs/Knowledge_Base/subscription_key_icons/commerce_icon.svg",
    alt: "Revenue Hub"
  }].filter(product => product.name && product.level);
  if (products.length === 0) return null;
  return <div>
      <div className="text-sm mb-2">{translations.description}</div>
      <div className={`grid ${products.length === 1 ? 'grid-cols-1' : 'grid-cols-2'} gap-1.5`}>
        {products.map((product, index) => <div key={index} style={{
    display: 'flex',
    alignItems: 'center'
  }}>
            <img src={product.icon} alt={product.alt} className="w-3.5 h-3.5 mr-1.5 mt-2.5 mb-2.5 flex-shrink-0 align-middle" />
            <span className="font-medium mr-1 text-sm">{product.name} -</span>
            <span className="text-sm">{product.level}</span>
          </div>)}
      </div>
    </div>;
};

<AccordionGroup>
  <Accordion title="Supported products" defaultOpen="true" icon="cubes">
    <SupportedProducts marketing={true} sales={true} service={true} cms={true} marketingLevel="FREE" salesLevel="FREE" serviceLevel="FREE" cmsLevel="FREE" />
  </Accordion>

  <Accordion title="Required Scopes" icon="key">
    <ScopesList
      scopes={[
  'crm.objects.marketing_events.write'
]}
    />
  </Accordion>
</AccordionGroup>


## OpenAPI

````yaml specs/2026-03/marketing-marketing-events-v2026-03.json PATCH /marketing/marketing-events/2026-03/{objectId}
openapi: 3.0.1
info:
  title: Marketing Marketing Events
  description: Basepom for all HubSpot Projects
  version: 2026-03
  x-hubspot-product-tier-requirements:
    marketing: FREE
    sales: FREE
    service: FREE
    cms: FREE
    commerce: FREE
    crmHub: FREE
    dataHub: FREE
servers:
  - url: https://api.hubapi.com
security: []
tags:
  - name: Basic
  - name: Batch
  - name: Event Attendees
  - name: Event Status
  - name: Identifiers
  - name: List Associations
  - name: Participant State
  - name: Settings
  - name: Subscriber State Changes
paths:
  /marketing/marketing-events/2026-03/{objectId}:
    patch:
      tags:
        - Basic
      summary: Update Marketing Event by objectId
      description: >-
        Updates the details of an existing Marketing Event identified by its
        objectId, if it exists.
      operationId: patch-/marketing/marketing-events/2026-03/{objectId}_updateByObjectId
      parameters:
        - name: objectId
          in: path
          description: The internal id of the marketing event in HubSpot.
          required: true
          style: simple
          explode: false
          schema:
            type: string
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/MarketingEventPublicUpdateRequestV2'
        required: true
      responses:
        '200':
          description: successful operation
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MarketingEventPublicDefaultResponseV2'
        default:
          $ref: '#/components/responses/Error'
          description: ''
      security:
        - oauth2:
            - crm.objects.marketing_events.write
components:
  schemas:
    MarketingEventPublicUpdateRequestV2:
      required:
        - customProperties
      type: object
      properties:
        customProperties:
          type: array
          items:
            $ref: '#/components/schemas/PropertyValue'
        endDateTime:
          type: string
          description: The end date and time of the marketing event
          format: date-time
        eventCancelled:
          type: boolean
          description: Indicates if the marketing event has been cancelled
        eventDescription:
          type: string
          description: The description of the marketing event
        eventName:
          type: string
          description: The name of the marketing event
        eventOrganizer:
          type: string
          description: The name of the organizer of the marketing event
        eventType:
          type: string
          description: The type of the marketing event
        eventUrl:
          type: string
          description: >-
            A URL in the external event application where the marketing event
            can be managed
        startDateTime:
          type: string
          description: The start date and time of the marketing event
          format: date-time
    MarketingEventPublicDefaultResponseV2:
      required:
        - createdAt
        - customProperties
        - eventName
        - objectId
        - updatedAt
      type: object
      properties:
        appInfo:
          $ref: '#/components/schemas/AppInfo'
        createdAt:
          type: string
          description: The creation date and time of the marketing event
          format: date-time
        customProperties:
          type: array
          items:
            $ref: '#/components/schemas/CrmPropertyWrapper'
        endDateTime:
          type: string
          description: The end date and time of the marketing event
          format: date-time
        eventCancelled:
          type: boolean
          description: Indicates if the marketing event has been cancelled
        eventCompleted:
          type: boolean
          description: Indicates if the marketing event has been completed
        eventDescription:
          type: string
          description: The description of the marketing event
        eventName:
          type: string
          description: The name of the marketing event
        eventOrganizer:
          type: string
          description: The name of the organizer of the marketing event
        eventType:
          type: string
          description: The type of the marketing event
        eventUrl:
          type: string
          description: >-
            A URL in the external event application where the marketing event
            can be managed
        objectId:
          type: string
          description: The internal ID of the marketing event in HubSpot
        startDateTime:
          type: string
          description: The start date and time of the marketing event
          format: date-time
        updatedAt:
          type: string
          description: The update date and time of the marketing event
          format: date-time
    PropertyValue:
      required:
        - dataSensitivity
        - isEncrypted
        - isLargeValue
        - name
        - persistenceTimestamp
        - requestId
        - selectedByUser
        - selectedByUserTimestamp
        - source
        - sourceId
        - sourceLabel
        - sourceMetadata
        - sourceUpstreamDeployable
        - sourceVid
        - timestamp
        - unit
        - updatedByUserId
        - useTimestampAsPersistenceTimestamp
        - value
      type: object
      properties:
        dataSensitivity:
          type: string
          description: Level of data sensitivity
          enum:
            - high
            - none
            - standard
        isEncrypted:
          type: boolean
          description: Indicates whether the property is encrypted
        isLargeValue:
          type: boolean
          description: >-
            Indicates whether the property value is stored as a large value in
            the storage
        name:
          type: string
          description: Name of custom property
        persistenceTimestamp:
          type: integer
          description: >-
            The timestamp that indicates when the value being written is
            persisted in storage
          format: int64
        requestId:
          type: string
          description: The ID of the request
        selectedByUser:
          type: boolean
          description: Indicates whether the property is selected
        selectedByUserTimestamp:
          type: integer
          description: Timestamp of when the property was selected by the user
          format: int64
        source:
          type: string
          description: Source of the property
          enum:
            - ACADEMY
            - ACCEPTANCE_TEST
            - ACTIVITY_AUTO_ASSOCIATE
            - ACTIVITY_LOG_REVERT
            - ADS
            - AI_GROUP
            - ANALYTICS
            - API
            - APPROVALS
            - ASSISTS
            - ASSOCIATIONS
            - AUTO_ASSOCIATE_BY_DOMAIN
            - AUTOMATION_JOURNEY
            - AUTOMATION_PLATFORM
            - AVATARS_SERVICE
            - BATCH_UPDATE
            - BCC_TO_CRM
            - BEHAVIORAL_EVENTS
            - BET_ASSIGNMENT
            - BET_CRM_CONNECTOR
            - BIDEN
            - BILLING
            - BOT
            - BREEZE_AGENT
            - CALCULATED
            - CENTRAL_EXCHANGE_RATES
            - CHATSPOT
            - CLONE_OBJECTS
            - COMMUNICATOR
            - COMPANIES
            - COMPANY_FAMILIES
            - COMPANY_INSIGHTS
            - CONNECTED_ACCOUNT
            - CONTACTS
            - CONTACTS_WEB
            - CONTENT_MEMBERSHIP
            - CONVERSATIONAL_ENRICHMENT
            - CONVERSATIONS
            - CRM_PROCESSES_PLATFORM
            - CRM_UI
            - CRM_UI_BULK_ACTION
            - CUSTOMER_AGENT
            - CUSTOMER_PORTAL
            - DATA_ENRICHMENT
            - DATA_QUALITY
            - DATASET
            - DEALS
            - DEFAULT
            - DELETE_OBJECTS
            - DI_WRITE_TO_CRM
            - EMAIL
            - EMAIL_INBOX_IMPORT
            - EMAIL_INTEGRATION
            - ENGAGEMENTS
            - EXTENSION
            - FILE_MANAGER
            - FLYWHEEL_PRODUCT_DATA_SYNC
            - FORECASTING
            - FORM
            - FORWARD_TO_CRM
            - GMAIL_INTEGRATION
            - GOALS
            - HEISENBERG
            - HELP_DESK
            - HELP_DESK_AI
            - IMPORT
            - INTEGRATION
            - INTEGRATIONS_PLATFORM
            - INTEGRATIONS_SYNC
            - INTENT
            - INTERNAL_PROCESSING
            - LEADIN
            - LEGAL_BASIS_REMEDIATION
            - MARKET_SOURCING
            - MARKETPLACE
            - MARKETS
            - MEETINGS
            - MERGE_COMPANIES
            - MERGE_CONTACTS
            - MERGE_OBJECTS
            - MERGE_REVERT_OBJECTS
            - MICROAPPS
            - MIGRATION
            - MOBILE_ANDROID
            - MOBILE_IOS
            - PAYMENTS
            - PIPELINE_SETTINGS
            - PLAYBOOKS
            - PORTAL_OBJECT_SYNC
            - PORTAL_USER_ASSOCIATOR
            - PRESENTATIONS
            - PRIMARY_AUTOMATION
            - PROPERTY_DEFAULT_VALUE
            - PROPERTY_RESTORE
            - PROPERTY_SETTINGS
            - PROSPECTING_AGENT
            - QUOTAS
            - QUOTES
            - RECYCLING_BIN
            - RESTORE_OBJECTS
            - REVENUE_PLATFORM
            - SALES
            - SALES_MESSAGES
            - SALESFORCE
            - SEQUENCES
            - SETTINGS
            - SIDEKICK
            - SIGNALS
            - SLACK_INTEGRATION
            - SMART_DATA_CAPTURE
            - SOCIAL
            - SUCCESS
            - TALLY
            - TASK
            - UNKNOWN
            - WAL_INCREMENTAL
            - WORK_UI
            - WORKFLOW_CONTACT_DELETE_ACTION
            - WORKFLOWS
        sourceId:
          type: string
          description: ID of the source of the property
        sourceLabel:
          type: string
          description: Label of the source of the property
        sourceMetadata:
          type: string
          description: Source metadata encoded as a base64 string
        sourceUpstreamDeployable:
          type: string
          description: Indicates which upstream service made the property change
        sourceVid:
          type: array
          description: The unique identifier associated with the source.
          items:
            type: integer
            format: int64
        timestamp:
          type: integer
          description: Timestamp of the request
          format: int64
        unit:
          type: string
          description: The unit
        updatedByUserId:
          type: integer
          description: The ID of the user who last updated the property
          format: int32
        useTimestampAsPersistenceTimestamp:
          type: boolean
          description: >-
            Indicates if the persistence timestamp is the same as storage
            version timestamp
        value:
          type: string
          description: Custom property value
      description: >-
        Represents a single custom property of a marketing event, storing its
        name, value, metadata (like source, timestamp, and sensitivity), and
        related audit information for tracking changes.
    AppInfo:
      required:
        - id
        - name
      type: object
      properties:
        id:
          type: string
          description: The ID of the application
        name:
          type: string
          description: The name of the application
    CrmPropertyWrapper:
      required:
        - name
        - value
      type: object
      properties:
        name:
          type: string
          description: The name of the property in the CRM
        value:
          type: string
          description: The value of the property in the CRM
    Error:
      required:
        - category
        - correlationId
        - message
      type: object
      properties:
        category:
          type: string
          description: The error category
        context:
          type: object
          additionalProperties:
            type: array
            items:
              type: string
          description: Context about the error condition
          example: >-
            {invalidPropertyName=[propertyValue], missingScopes=[scope1,
            scope2]}
        correlationId:
          type: string
          description: >-
            A unique identifier for the request. Include this value with any
            error reports or support tickets
          format: uuid
          example: aeb5f871-7f07-4993-9211-075dc63e7cbf
        errors:
          type: array
          description: further information about the error
          items:
            $ref: '#/components/schemas/ErrorDetail'
        links:
          type: object
          additionalProperties:
            type: string
          description: >-
            A map of link names to associated URIs containing documentation
            about the error or recommended remediation steps
        message:
          type: string
          description: >-
            A human readable message describing the error along with remediation
            steps where appropriate
          example: An error occurred
        subCategory:
          type: string
          description: >-
            A specific category that contains more specific detail about the
            error
      example:
        message: Invalid input (details will vary based on the error)
        correlationId: aeb5f871-7f07-4993-9211-075dc63e7cbf
        category: VALIDATION_ERROR
        links:
          knowledge-base: https://www.hubspot.com/products/service/knowledge-base
    ErrorDetail:
      required:
        - message
      type: object
      properties:
        code:
          type: string
          description: The status code associated with the error detail
        context:
          type: object
          additionalProperties:
            type: array
            items:
              type: string
          description: Context about the error condition
          example: '{missingScopes=[scope1, scope2]}'
        in:
          type: string
          description: The name of the field or parameter in which the error was found.
        message:
          type: string
          description: >-
            A human readable message describing the error along with remediation
            steps where appropriate
        subCategory:
          type: string
          description: >-
            A specific category that contains more specific detail about the
            error
  responses:
    Error:
      description: An error occurred.
      content:
        '*/*':
          schema:
            $ref: '#/components/schemas/Error'
  securitySchemes:
    oauth2:
      type: oauth2
      flows:
        authorizationCode:
          authorizationUrl: https://app.hubspot.com/oauth/authorize
          tokenUrl: https://api.hubapi.com/oauth/v1/token
          scopes:
            crm.objects.marketing_events.read: ''
            crm.objects.marketing_events.write: ''
            developers-read: ''
            developers-write: ''

````