If your organization does not have an internal content management system (CMS) or does not use an accounting application to manage product data, then you will most likely not have proprietary IDs for your data. If this is the case, then you will need to generate proprietary IDs on your own.
Product Data
I recommend the following method for the proprietary ID of the product data:
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For example, if your organization publishes primarily (or only) reinforced library binding books, use the reinforced library ISBN as the proprietary ID for each product row in the “products” ingestion template.
Product Format Data
I recommend the following method for the proprietary ID of the product format data (NB: if your organization assigns unique ISBNs to all formats then you do not need to populate the proprietary_id column of the “product_formats” ingestion template):
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