OVER_ASIN_GUIDANCE Error
According to Amazon Seller Support, when receiving this message it means that you or Amazon has reached the maximum inventory quota allowed for this product in the FBA warehouse, due to capacity or other restrictions determined by Amazon’s automatic logistics algorithms.
Solution
Delete this item.
You can try to list the item with the OVER_ASIN_GUIDANCE issue one week later to see if Amazon allows you to ship this item to its warehouse again.