My vendor asked me why [strike]the[/strike] A system can’t check the invoice which has been paid. [strike]But[/strike] I only know [strike]the[/strike] that B system can do [strike]actually[/strike] the job, so I [strike]reply[/strike] replied to the vendor as written below.
If this is for a real situation then I find this is an awkward answer? If the invoice has been paid, is there a problem with the vendor not realizing that payment has been made?
Having been in sales for half my working life, I have never seen a customer question what system was used to process payments. It may be that somehow the payment did not reach the vendor, but once it did any vendor worth its salt would process the payment satisfactorily. There is to my knowledge no "standard" way of processing payments that all vendors should follow.
However, if this is just a grammar lesson this is how I would write a reply.
Dear John,
I am not sure why [strike]the[/strike] A system can’t check the invoice [strike]which[/strike] to see if it has been paid. As far as I know, all [strike]the[/strike] vendors should use [strike]the[/strike] B system to check whether or not [strike]the[/strike] an invoice has been [strike]paid instead [/strike]processed properly .
There is no reason to put an article before "A system" or "B system". Written as they are they are unique. Here is the reply without the corrections identified. I changed the last paid to "
processed properly" to prevent a repetition of the phrase "
has been paid". I could have also used instead "
.... whether or not payment on an invoice has been received." to be specific to your complaint.
I am not sure why A system can’t check the invoice to see if it has been paid. As far as I know, all vendors should use B system to check whether or not an invoice has been processed properly.
or
I am not sure why A system can’t check the invoice to see if it has been paid. As far as I know, all vendors should use B system to check whether or not payment on an invoice has been received.