公司的产品一直使用的UPC都是淘宝买的，不是正规的UPC，这次UPC出现异常导致链接无法编辑上架，开case客服回复如下：
Hello from Amazon Selling Partner Support,

I understand that your concern is regarding unable to list the ASIN B07FFXXXXX.

I would like to inform you that I have receive an update from our internal team that we would require a proof stating that the brand """XXXXX""" has the permission to use the EAN/UPCs owned by "Covers Company Inc.".

The proof of affiliation/relation between brand and EAN owner can be in the form of either of the following:

1.Copyright
2.Trademark
3.Legal Agreement
4.Letter of Affiliation

Please note that the letter of affiliation:

1.Should be clear & legible
2.Should contain letterhead (preferably with logo)
3.Should include the issuer's name and contact information (this can also be found in the footer of the letter or indicated in text)
4.The affiliation between the Brand & the Barcode Owner should be clearly called out 5.The letter should be authentic (see Signs of a Digitally Manipulated Document here) Note: The letter must also include the point of contact at the brand or manufacturer that Amazon can contact to verify.

Your understanding and co-operation on this issue is appreciated. We look forward to hearing from you soon.

Please be informed, if we do not hear back from you within 48 hours, this case status will automatically set to "Resolved".

Thank you for selling with Amazon,

Aman M.
Amazon.com Seller Support
有大神遇到这种情况吗，需要提供什么证据？或者有模板可以借鉴下的吗？小白第一次遇到这种情况呜呜呜，如果解决不了估计会被老板叼，求助各路大神！跪写！