The person account record type isn't available" error when bulk updating Person Accounts

Cause 1: The running user's profile or permission set does not have the Person Account record type assigned.

1. Identify the user authenticated in your update tool (Salesforce Inspector, Data Loader, or the user running the Apex batch).

2. Go to Setup > Users > Profiles and open that user's profile.

3. In the Account record type section, under Record Type Settings > Account, click [Edit].

4. Move the Person Account record type (for example [PersonAccount]) from Available Record Types to Selected Record Types.

5. Set the Default value to your standard Account record type, then click [Save].

6. If you assign record types by permission set, go to Setup > Permission Sets, open the relevant permission set, select Object Settings > Accounts, and set the Person Account record type Assigned checkbox to checked.

Cause 2: The Person Account record type is inactive or not deployed

1. Go to Setup > Object Manager > Person Account [Account] > Record Types.

2. Confirm the Person Account record type row shows Active = checked. If it is not active, click [Edit], set Active to checked, and click [Save].

Cause 3: Individual records reference a Person Account record type the running user cannot access.

1. In your source CSV, confirm the [RecordTypeId] (or the record type Developer Name) column matches an active Person Account record type the running user has assigned in Cause 1.

2. Remove or correct rows that reference any inactive or unassigned record type.

3. Re-run the bulk update in batches of 200 records to isolate failing rows.

Confirm the issue is resolved by re-running the same Person Account bulk update through Salesforce Inspector against 1 test record; the update completes without the "HealthCloudGA__Account.Trigger: execution of AfterUpdate ... The person account record type isn't available" error, and the record's Last Modified date updates.