It happens when applying a config template when a new customer is created. Please check if any template is applied, you can go to Integration Table Mappings and select CUSTOMER mapping and check it.
Customizing an Integration with Microsoft Dataverse - Business Central | Microsoft Learn
André Arnaud de Cal... 291,904 Super User 2024 Season 2
Martin Dráb 230,605 Most Valuable Professional
nmaenpaa 101,156