Magento 2 API - Update Product Custom Attribute to Blank/Null

Question

I am trying to update a product via the Magento 2 Rest API.

If an attribute already has a value I can update that value with another value with no problems.

However if I want to delete the value and leave the attribute blank it will not update and just leaves the old value in place.

I have tried submitting NULL and blank values but with no effect.

array( 'attribute_code' => 'standard_consumables', 'value' => '' ),
array( 'attribute_code' => 'standard_consumables', 'value' => NULL ),

How can I remove a custom attribute value via the REST API.

Thanks

Answer 1

This was fixed in 2.2.x, see:

• REST API: Cannot delete custom attribute from product #10807 for issue thread, and
• Support null value for custom attributes. for the fix

Answer 2

"product": {
    "custom_attributes": [
        {
            "attribute_code": "your_attribute_code",
            "value": null
        }
    ]
}

}

This is the correct payload for updating the custom_attribute k