How to set product_type from the category path

product_type is your own category for each product. Google uses it to understand the catalog and you use it to split Shopping campaigns. Most stores already have it - as a path like Home > Garden > Pots.

1. Open the data source, go to Rules and create a new rule - for example “Product type from category”.
2. Under then pick product_type and choose Split text.
3. Set from to your category field and split on to the separator, for example > (with the spaces).
4. Choose the parts: start position 1, nth part from the Beginning, and last position 1, nth part from the End, keeps the whole path; 1 from the End for both keeps only the last level.
5. Set join words with - for example > again - check Changes preview and Save Rule.

Example

• category Home > Garden > Pots, positions 1 from the Beginning to 1 from the End → Home > Garden > Pots
• Positions 1 from the End to 1 from the End → Pots
• Positions 1 to 2 from the Beginning → Home > Garden

Positions are counted from 1. For Google's own taxonomy use Assign Google product categories.