Error with Variations Sku

I’m trying to set up a product with 3 variations. Each variation has a different SKU. I have another item set up in that format and it works perfectly, however now I’m getting an error with the second product that says “Invalid or duplicated sku”. I’ve checked the settings of the first one and everything looks the same. Why would this error occur?

Hello,

Please make the full backup of the site and check the plugin on the Storefront theme to find our if our theme causes the error or it is caused by wrong configuration.

Best Regards

[Author]

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