An administrator created two record types on the Account object: Internal Customers and External Customers.

Changing the record type of a record does not affect the record access of a user. Record access is determined by the organization-wide default, role hierarchy, sharing rules, manual sharing, teams, and ownership. Record type only affects the page layout and picklist values that are available for the record. Therefore, if a user has access to a record before changing its record type, they will still have the same access after changing its record type. References: https://help.salesforce.com/s/articleView?id=sf.customize_recordtype.htm &type=5 https://help.salesforce.com/s/articleView?id=sf.security_sharing_overview.htm &type=5