英语翻译很高兴收到你的邮件,附件当中有两个编号有误,且目前公司只能提供A4样,请知悉.（以上请准确翻译,）

We are so glad to receive your email. There are two incorrect product numbers in the attachment, and our company can only provide samples of A4. Please kindly be noted.

Dear xx,

It is glad to hear from you. （或者Thank you for your email below). Please be advised that there are two incorrect serial numbers in the attachment. In addtion, in our company currently it is only availble to provide the sample of A4.

Should you have any questions, please do not hesitate to contact us.

Best regards,

我的最规范。。。

Glad to receive your letter,
there are two wrong serial number in attached file, and only A4 sample is available now.

I am very glad to receive your E-mail, there are two serial number mistakes in the attached and the company can only provide A4 form at the moment, please be informed.

I'm glad to recieve your e-mail . Two serial number are wrong in the appendix you've sent me. Besides,our company can only afford A4 model. Please understand.

Very glad to receive your mail, appendix have two Numbers is wrong, and the company can only provide A4 kind, please remember that.

we are very glad to receive your letter,and we'd like to notify you that here are two mistakes with the code in the copy, and only the sample of A4 is available.

We are so glad to receive your email.There are two incorrect product numbers in the attachment,and our company can only provide samples of A4.Please kindly be noted.

I'm glad to receive your email. Please note two serial numbers in the attachment are wrong. At present, our company can only provide the A4 samples.

Thanks for your email(或prompt reply)!

there's two series number mistakes in the attachment.

So far, our company can only provide the sample of A4.

Pls noted .（或者Really sorry for the inconvenience that brought to you)

Any comments by return will be much appreciated!

Best Regards

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我一般写邮件都这样写的