Note that inventory already in Amazon fulfillment centers as of March 31, 2026 is still commingled
"Also what happens after March 31st with the leftover commingled inventory that’s already there?
No action is required for stickerless inventory currently in-transit to or stored in our fulfillment centers. These products will continue to sell under their original SKUs.
"Also what happens after March 31st with the leftover commingled inventory that’s already there?
No action is required for stickerless inventory currently in-transit to or stored in our fulfillment centers. These products will continue to sell under their original SKUs.
However for a reseller, after March 31, 2026, all new inventory must use Amazon barcodes. Please review the FBA Barcode Choice and Labeling FAQ for additional information." -- https://sellercentral.amazon.com/seller-forums/discussions/t...