Copy Code Trigger Definition 

            CREATE trigger [dbo].[TR_PDACCOUNTSTRUCTURE_DEL] on [dbo].[PDACCOUNTSTRUCTURE]
        for delete
        as
        set nocount on
        if exists(select 1 from deleted where ID = '90C72BDA-7994-401B-8A9F-7B36FA65D9FC') 
            begin
                raiserror('Cannot delete the default account code', 16, 1)
                rollback
            end