Set default value for product attribute in magento 2.1

Question

When i add configurable product with associated products, associated products types are changed to virtual product.

When i change weight field value is This item has weight then the product type was changed to virtual to simple

How to set default value to product has weight attribute for associated products.

Or

Change product type virtual to simple while adding associated product in create configurations.

<field name="product_has_weight" group="product-details" />

Answer 1

when you create a product without weight you create a virtual product. You should convert your product to a simple one and then update its weight.