The Reference ID field, in ecomdash, is the unique mapping system that we use to map SKUs that are different on each channel you have to your products listed.
Reference ID can be set in bulk through a file upload using the steps below:
1. Build an Inventory Import Format. Use the attributes SKU Number and Reference ID. Be sure to select a storefront from the storefront dropdown. The Reference ID will be set for your selected storefront.
2. Once the Import Format and File are complete, upload the file to update the Reference ID.