Change Data Capture Developer Guide

Change Data Capture
Keep Your External Data Current with Change Data Capture
Change Event Message Structure
Subscribe to Change Events
Security Considerations
Change Event Considerations
Standard Object Notes
Change Events for Tasks and Events
Change Events for Person Accounts
Creating and Undeleting a Person Account
Updating a Person Account
Converting an Account
Deleting a Person Account
Change Events for Users
Change Events for Fields
Other Types of Change Events: Gap and Overflow Events
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Updating a Person Account

When updating a person account, two change events are generated, one for the account and one for the contact, regardless which fields changed. Salesforce always updates the LastModifiedDate system field in both the account and contact even if the field updated is only in one of the underlying records.

Because a person account corresponds to one account and one contact, the timestamp fields of the account and contact records must match. If an account-only field is updated, such as the Industry field, the account change event contains the changed field and the LastModifiedDate field. The contact change event contains only the LastModifiedDate field. If the updated field stems from a contact, or is a custom contact field, both change events contain all changed fields and the LastModifiedDate field. In particular, if a person account's first name or last name is modified, the corresponding field is included in both change events.