If a product having
custom option, its SKU is created on the fly.
If you look at file.
You will find a function
getOptionSku, which is responsible for creating SKU.
If you want to remove custom option SKU to main product’s SKU, You can change to
**$sku .= $skuDelimiter . $optionSku;**
$sku = SKU of product
$skuDelimiter = –
$optionSku = SKU of custom option of product
You can change as per your requirement.
**Note:** Never edit core files, you need a proper Model overriding. For test purpose you can check by putting
die below this sku generation code and add a product from front.