Amazon error 6024: Not authorised to list in this product line, category or brand
What does it mean?
A restriction applies to what you are trying to list.
How to fix it
In Seller Central, start adding the product and use “Listing limitations apply” to request approval.
Where do you fix it?
- In Seller Central: application or setting
- 8026Not authorised to list in this category
- 6039Approval is needed for a restricted sub-category
- 6042The item is restricted for this product type
- 18299Not currently approved to sell this product
- 90202A restriction is in effect for this item
- 8059The item is restricted by Amazon in your region
- 8543The SKU matched an ASIN that has listing restrictions
- 4400Not approved for seller-fulfilled offers in this category
Source
Summarised in our own words; Amazon's page is leading.