Revised the purchase order
I'm writing a email to my customer. Does it sound nature and formal?

Here's the revised order PO-1234
We changed the quantities form 1200 pieces to 1280 pieces.
Do not reproduce again for the same order.

Can I also say
"This is the revision order on 2018/3/8, Po-1234.
Do not take this as a new order."
Because last time my customer though I send them a new oreder. I want to make sure they wont mess up this time.

Question

Revised the purchase order
I'm writing a email to my customer. Does it sound nature and formal?

Here's the revised order PO-1234
We changed the quantities form 1200 pieces to 1280 pieces.
Do not reproduce again for the same order.

Can I also say
"This is the revision order on 2018/3/8, Po-1234.
Do not take this as a new order."
Because last time my customer though I send them a new oreder. I want to make sure they wont mess up this time.

Answer

I'm writing a email to my customer. Does it sound natural** and formal?

Here is** the revised order PO-1234
We changed the quantities from** 1200 pieces to 1280 pieces.
Do not resubmit this same order.**

Hope this helps!

Answer

Dear ___,

[Please find attached the revised order PO-1234].Here's the revised order PO-1234
We HAVE changed the quantities form 1200 pieces to 1280 pieces.
[Please note THIS IS NOT A NEW ORDER, it is an amendment of the existing order]. Do not reproduce again for the same order.

[If you have any questions please contact me]

Kind Regards

_____