How to Importing additional multiselect Product attributes CSV Magento 2?

Import additional select, multi-select attributes with Product CSV in Magento 2 using adding additional_attributes column.

Create a CSV file with the first column is the sku and the second column will be additional_attributes.

You must add a multi-select attribute value with the pipe separator.

Let’s take a Material Multi-select attribute from the Magento opensource Sample data,