Value for attribute contains incorrect value, see acceptable values on settings specified for Admin in row Magento 2.

While you importing products using OOTB Magento importer, sometimes you have faced this type of errors before import products,

You can resolve the error by manual work with check specific rows in the CSV.

Some known issue is the,
— Typo error in the Column value.
— Added Value is not available for the specific attributes.
— You have added unnecessary quotes in the column value.

Value for ‘activity’ attribute contains an incorrect value, see acceptable values on settings specified for Admin in a row(s): 2

I have a CSV file with Row 2 with a given value,

Walking is not available in the activity attributes. You have to remove extra attribute value from the column value or fix the typo error if available.

Fixed the error from the CSV, Import it again and your error will be gone.

This is the basic step you need to care about import products.