Why some codes failed to import

Discount codes in Shopify must be unique across every discount in your store. If CodeBulk tries to import a code that already exists, on this discount or any other, Shopify rejects it and it counts as Failed. Rarely, a code fails because of a network problem that’s still there after CodeBulk’s retries.

Failed codes don’t count toward your free allowance.

Avoiding duplicates

• Keep Include Job ID on. It adds the job’s ID to every code, so codes from different jobs can’t be the same.
• Use a unique prefix or suffix for each campaign.
• Use a longer length when you make large sets.