中译英：好的,已按要求更新这三张Invoices.另外,采购单号为：4503281572的Invoice是

你好这位朋友,正确+地道的翻译如下：
I confirm that per your request,these 3 Invoices have been updated accordingly.In addition,please note that an invoice sent to you earlier which is associated with Order #4503281572 has now been updated too,as requested.Please review the attachments.Thank you.
注意：开头的“好的”我故意不翻译的,英语中没有这种表达习惯,建议你删除,不影响句子意思,而且还是很有礼貌的 :-)

OK, we have already updated the three invoices as required. Besides, the invoice of which purchase ID is 4503281572 has been sent before, we updated it as well as required. Please see file attached for more detail, thanks.