Tip #379: To Delete The Undeletable Product Have you tried to delete a product from Dynamics CRM 2015? if you do, you may see this message. (But really, aren’t all errors unexpected?) If this happens to you, disable auditing on the product entity. You will then be able to delete the product.
Thanks Joel, we’ve got the exact error today. Without this info, we would have ended up in a wild goose chase.