Magento: Admin store attribute option label "%1" is already exists
A SKU in Magento 2.x has different attribute values than the corresponding SKU in S2S, causing the SKU not to update.
magento-2
Magento 2.x attribute values do not match what is in S2S.
Compare the values between S2S and Magento and if they differ, it will need to be updated in S2S to match the exact value Magento expects for the attribute. Once the value on the product is updated in S2S, you can retry the queue error and it should process if nothing else is misaligned.
If the attribute value is being managed from your ERP, ensure that the values are correct on the ERP.