> ## 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: 5601a5d8-22e5-4de8-8e3c-a4a5da6c5412
---

# Send a batch of event occurrences

> Send multiple event occurrences at once.

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, crm, marketingLevel, salesLevel, serviceLevel, cmsLevel, dataLevel, commerceLevel, crmLevel}) => {
  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",
      crm: "Smart CRM"
    },
    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://www.hubspot.com/hubfs/Knowledge_Base_2023-24-25/developer/icons/MarketingHub.svg",
    alt: "Marketing Hub"
  }, {
    name: sales ? translations.productNames.sales : '',
    level: translateTier(salesLevel),
    icon: "https://www.hubspot.com/hubfs/Knowledge_Base_2023-24-25/developer/icons/SalesHub.svg",
    alt: "Sales Hub"
  }, {
    name: service ? translations.productNames.service : '',
    level: translateTier(serviceLevel),
    icon: "https://www.hubspot.com/hubfs/Knowledge_Base_2023-24-25/developer/icons/ServiceHub.svg",
    alt: "Service Hub"
  }, {
    name: cms ? translations.productNames.cms : '',
    level: translateTier(cmsLevel),
    icon: "https://www.hubspot.com/hubfs/Knowledge_Base_2023-24-25/developer/icons/ContentHub.svg",
    alt: "Content Hub"
  }, {
    name: data ? translations.productNames.data : '',
    level: translateTier(dataLevel),
    icon: "https://www.hubspot.com/hubfs/Knowledge_Base_2023-24-25/developer/icons/DataHub.svg",
    alt: "Data Hub"
  }, {
    name: commerce ? translations.productNames.commerce : '',
    level: translateTier(commerceLevel),
    icon: "https://www.hubspot.com/hubfs/Knowledge_Base/subscription_key_icons/commerce_icon.svg",
    alt: "Revenue Hub"
  }, {
    name: crm ? translations.productNames.crm : '',
    level: translateTier(crmLevel),
    icon: "https://www.hubspot.com/hubfs/Knowledge_Base_2023-24-25/developer/icons/SmartCRM.svg",
    alt: "Smart CRM"
  }].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} data={true} commerce={true} marketingLevel="professional" salesLevel="professional" serviceLevel="professional" cmsLevel="professional" dataLevel="professional" commerceLevel="professional" />
  </Accordion>

  <Accordion title="Required Scopes" icon="key">
    <ScopesList
      scopes={[
  'analytics.behavioral_events.send'
]}
    />
  </Accordion>
</AccordionGroup>


## OpenAPI

````yaml specs/2026-03/events-send-event-completions-v2026-03.json POST /events/2026-03/send/batch
openapi: 3.0.1
info:
  title: Events Send Event Completions
  description: Basepom for all HubSpot Projects
  version: 2026-03
  x-hubspot-product-tier-requirements:
    marketing: ENTERPRISE
    sales: ENTERPRISE
    service: ENTERPRISE
    cms: ENTERPRISE
    commerce: ENTERPRISE
    crmHub: ENTERPRISE
    dataHub: ENTERPRISE
servers:
  - url: https://api.hubapi.com
security: []
tags:
  - name: Basic
  - name: Batch
paths:
  /events/2026-03/send/batch:
    post:
      tags:
        - Batch
      summary: Send a batch of event occurrences
      description: Send multiple event occurrences at once.
      operationId: post-/events/2026-03/send/batch_send
      parameters: []
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/BatchedBehavioralEventHttpCompletionRequest'
        required: true
      responses:
        '204':
          description: No content
          content: {}
        default:
          $ref: '#/components/responses/Error'
          description: ''
      security:
        - oauth2:
            - analytics.behavioral_events.send
components:
  schemas:
    BatchedBehavioralEventHttpCompletionRequest:
      required:
        - inputs
      type: object
      properties:
        inputs:
          type: array
          items:
            $ref: '#/components/schemas/BehavioralEventHttpCompletionRequest'
    BehavioralEventHttpCompletionRequest:
      required:
        - eventName
        - properties
      type: object
      properties:
        email:
          type: string
          description: >-
            The visitor's email address. Used for associating the event data
            with a CRM record.
        eventName:
          type: string
          description: >-
            The event's fully qualified name. This value (formatted as
            `pe{HubID}_{name}`) can be retrieved through the [event definitions
            API](https://developers.hubspot.com/docs/reference/api/analytics-and-events/custom-events/custom-event-definitions#get-%2Fevents%2Fv3%2Fevent-definitions)
            or in [HubSpot's
            UI](https://knowledge.hubspot.com/reports/create-custom-behavioral-events-with-the-code-wizard#find-internal-name).
        objectId:
          type: string
          description: >-
            The ID of the record for which the event occurred (e.g., contact ID
            or visitor ID).
        occurredAt:
          type: string
          description: >-
            The time when this event occurred. If this isn't set, the current
            time will be used.
          format: date-time
        properties:
          type: object
          additionalProperties:
            type: string
          description: >-
            The event properties to update. Takes the format of key-value pairs
            (property internal name and property value). Learn more about
            [HubSpot's default event
            properties](https://developers.hubspot.com/docs/guides/api/analytics-and-events/custom-events/custom-event-definitions#hubspot-s-default-event-properties).
        utk:
          type: string
          description: >-
            The visitor's usertoken. Used for associating the event data with a
            CRM record.
        uuid:
          type: string
          description: >-
            A unique identifier for the event occurrence. Must be unique within
            the event type. If not provided, HubSpot will generate a random
            UUID. When multiple events have the same ID within a year, the first
            will be accepted and all others will be rejected. Can be useful for
            matching data between HubSpot and other external systems.
    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
      description: >-
        Represents an error response returned by the API when an operation
        fails. This component is used in various endpoints to provide detailed
        information about the error encountered.
      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
      description: >-
        Represents detailed information about an error that occurred in the API.
        This component is used to provide additional context and specifics about
        errors, typically as part of an error response.
  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:
            analytics.behavioral_events.send: ''
            behavioral_events.event_definitions.read_write: ''

````