Using Custom Record Entries
Custom record instances or entries are the specific custom records you create. You can create, edit and search your custom record instances from the list of record types. You can also inactivate or delete a record type that's no longer being used. To provide users with access to all custom records, user roles must have the Custom Record Entries permission enabled. For more information about role permissions, see Setting Permissions for Custom Records.
The maximum number of instances (MAXINT) permitted for a record type is 2,000,000,000. When the internal ID limit for a custom record type is reached, NetSuite reports an error if you attempt to create a new instance of the record type. Existing records are not affected, but you won't' be able to add new records of that type.
For details, see the following: