| export_invoice_hdr_id | 
            alex_invoice_export_header - export_invoice_hdr_id | 
            INT | 
            N | 
            A primary key and also foreign key. | 
           
           
            | paid_amount | 
            alpr_invoice - paid_amount | 
            numeric(20,10) | 
            Y | 
            The amount paid to the vendor | 
           
           
            | paid_date | 
            alpr_invoice - paid_date | 
            Datetime | 
            Y | 
            The time and date the vendor is paid | 
           
           
            | payment_number | 
            alpr_invoice - payment_number | 
            varchar(255) | 
            Y | 
            The description of the payment, and a check number | 
           
           
            | VOUCHER_NUMBER | 
            alex_invoice_export_header | 
            varchar(255) | 
            Y | 
            The voucher number of the invoice payment. | 
           
           
            | UPDATE_STATUS | 
             | 
            INT | 
            Y | 
            NULL = new record ready to import 2 = successfully imported 3 = non-recoverable error during import 6 = recoverable error during import | 
           
           
            | ALEX_INVOICE_PAYMENT_ID | 
             | 
            Int | 
            N | 
            Primary key and also an identity column |