Error:

- SKU up to 35 chars long, price, image, title, and type are required to add products to Amazon. SKU is missing.




Resolution:

Typically this SKU is missing error could be triggered when the sku value is unusually long and exceeds the allowed 35 characters by Amazon and in order to bypass it, a shorter amznsku value can be forced in via a bulk edit file so you can then submit the item to Amazon for processing and please see the example screenshot below: