Meta-fields
In your Shopify admin page, Go to Settings → Custom data → Select an option (Products, Orders, etc) to configure the Meta-fields.
Here is an example of product meta-field:
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List of meta-field definitions in product.
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Details of a product meta-field definition.
There are three fields in this definition:
Name
Namespace and key (the disabled one)
Description
Take the 2nd one - Namespace and Key separated by a period or full stop (.):
Namespace: custom
Key: color
These are the values we need for the meta-field configuration in Final Invoice.
Now, go to Templates in our app → click Customize → Line items → scroll down and check Show product meta fields → Add property and supply those values
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Product meta-fields section in the line items.
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Details of the product meta-field property.
Click Save template and you are good to go.
Here is an example of product meta-field:

List of meta-field definitions in product.

Details of a product meta-field definition.
There are three fields in this definition:
Name
Namespace and key (the disabled one)
Description
Take the 2nd one - Namespace and Key separated by a period or full stop (.):
Namespace: custom
Key: color
These are the values we need for the meta-field configuration in Final Invoice.
Now, go to Templates in our app → click Customize → Line items → scroll down and check Show product meta fields → Add property and supply those values

Product meta-fields section in the line items.
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Details of the product meta-field property.
Click Save template and you are good to go.
Updated on: 12/12/2024
Thank you!