How Person Addresses Are Validated

When a user enters the postal code from the UI, the other corresponding address fields are updated automatically and a validation is done to check whether the value entered is correct.

However, from REST and HDL, no such validation is done to check whether the geography hierarchy or the combination of address values entered are invalid. For such scenarios, you can run the Validate Geographies of Addresses Against Master Geographies ESS process with these parameters: Location Table Name = PER_ADDRESSES_F, Run Type = ALL, Country Code. This ESS process will give the list of addresses that don't match the validation. You can then correct these addresses.