You can view the SKUs in your Pietra account by going to:
Order Fulfillment > Items Stored at Pietra > Products Available for Sale.
If a product has variants (e.g., size options, color options, etc.), you can view the individual SKUs by hovering over the “Variants” column.
If a product does not have varaints, the SKU for that product will equal the ID shown in the “ID” column.
You can also find this information by exporting your product data from the Products Available for Sale section of your account (shown via the “Export” button in the top right corner of this tab.