If your listing is active you will need to revise it to change the package size. -- You can't revise the listing if there is an Auction Bid or an outstanding Best Offer (including Counteroffer or Offer to Watchers) on the listing.
However, when you ship, you will be able to enter the correct size at that time.
eastlaneave
Mentor1 year ago@prof_clark
If your listing is active you will need to revise it to change the package size.
-- You can't revise the listing if there is an Auction Bid or an outstanding Best Offer (including Counteroffer or Offer to Watchers) on the listing.
However, when you ship, you will be able to enter the correct size at that time.
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TO REVISE AN ACTIVE LISTING
--Here is how to revise a listing:
Click this link
https://www.ebay.com/help/selling/-/-/revising-listing?id=4356
Then click the photo of your item and follow the steps.