Hello @Seller_fQkumkcQxJQEJ

Christine here from Amazon Forums.

Thank you for reaching out about this issue.

I'd like to provide some guidance on how to address incorrect barcode quantities for your products.

• First, please log into your Seller Central account.
• Navigate to the "Inventory" tab and select "Manage Inventory."
• Locate the affected product(s) and click on "Edit."
• In the editing window, look for the "Fulfillment by Amazon" section.
• Find the field labeled "Number of units per case-pack" or similar, depending on your specific situation.
• Update this field with the correct number of units.
• Save your changes.

If you're unable to make these changes yourself or if the issue persists, please contact Seller Support directly through your Seller Central account.

They can provide more personalized assistance and may be able to make back-end adjustments if necessary.

Hope you have a great day!

Christine.