In Salesforce Marketing Cloud’s Journey Builder, when entering contacts via API in commercial emails, previously, only one contact could be included per request. However, with the Winter ’24 release, a new Batch Event API has been introduced, enabling the entry of up to 100 contacts per request. ▶ Interaction: Enter Contacts into a Journey in BatchesSalesforce DevelopersCreate an entry event that asynchronously inserts a batch of subscribers into a journey.developer.salesforce.com Please enter the information as follows. This sample serves as an example of entering three contacts with a single request. — MethodPOST— HeadersContent-Type: application/jsonAuthorization: Bearer [Access Token]— Endpoint[REST Base URL].rest.marketingcloudapis.com/interaction/v1/async/events— Body (Sample){ “eventDefinitionKey”: “[Event Definition Key]”, “members”: [ { “contactKey”: “[Subscriber Key 1]”, “data”: { “id”: “[Subscriber Key 1]”, “email”: “[Email Address 1]”, “firstName”: “[First Name 1]”, “lastName”: “[Last Name 1]” } }, { “contactKey”: “[Subscriber Key 2]”, “data”: { “id”: “[Subscriber Key 2]”, “email”: “[Email Address 2]”, “firstName”: “[First Name 2]”, “lastName”: “[Last Name 2]” } }, { “contactKey”: “[Subscriber Key 3]”, “data”: { “id”: “[Subscriber Key 3]”, “email”: “[Email Address 3]”, “firstName”: “[First Name 3]”, “lastName”: “[Last Name 3]” } } ]} As a result, multiple contacts are stored in the data extension with just one request, as depicted in the image. Thank you for reading.