The "Allow UI Access" setting in a custom record type determines whether users can create or edit records of that type through the NetSuite user interface (UI). If this option is not selected (i.e., it is unchecked), users are prevented from accessing the form associated with the custom record in the UI, which means they cannot create new records or edit existing ones in the UI. This setting is crucial for controlling the accessibility of sensitive or specialized records that should not be modified directly by users through the standard NetSuite interface, ensuring data integrity and compliance with business processes.
References:
* NetSuite Help Center: Custom Record Types
* NetSuite Developers Guide: Creating and Managing Custom Records