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Continue to ChatMagento 2: Create/Add Configurable Product Programmatically https://blog.chapagain.com.np/magento-2-create-add-configurable-product-programmatically/
Magento 2: Create/Add Configurable Product Programmatically https://blog.chapagain.com.np/magento-2-create-add-configurable-product-programmatically/