Hi @Seller_2lOb6BrZc5RaR

This is not big issue,

- Reason of this error: Your brand registry is not properly integrated with your seller central. OR second reason can be that your brand approval status is pending on brand registry portal. brand registry status must be REGISTERED.

- Here is following step that you need to follow,

1- Open a case with amazon for listing error submit your brand registry certificate and one screenshot of you brand registry portal where brand is showing registered status. and request to amazon support team for approve your brand. Also you need to submit that product branding pictures ( product must have sticker, Card, box packaging whatever is suitable and that packaging must show your brand name, product name, and listing barcode that you want to list. take pictures with different angles with natural background, take product in your hand and then click picture. click 3,4 picture like this and submit it.

2- Once they will done then you need to submit the form that is popping up during listing in which you need to click the relevant options that fit best for you, ( I forget the options so better is to share screenshot of application so that i can guide you more nicely). At the end of application form you have option to attach you brand registry certificate, and product branding pictures same like above. submit the application hopefully your issue will be resolved.

Note: Make sure you are suing GS1 barcodes for listing. Thank you