If you want custom field answers to appear on your Shopify packing slips, follow these steps:
From your Shopify admin, go to Settings > Shipping and delivery.
In the Shipping and delivery menu, click Packing slip template.
Find the line that contains
{{ line_item.title }}.After the closing
</span>tag for<span class="line-item-description-line">around that code, paste the following code:{% unless line_item.properties == empty %}
{%- for prop in line_item.properties -%}
{% unless prop.first == "_Form Fields" %}
{{ prop.first }}: {{ prop.last }}<br/>
{% endunless %}
{%- endfor -%}
{% endunless %}Click Save.
Once saved, your packing slips will show the answers customers provided in your custom fields.
If you’d rather see how this works, you can watch the quick video below: