An advertiser checks its tag health in Ads Manager and sees the following warnings: Ared triangle reads: “The em value provided by your Pinterest Tag is " (the empty string), undefined, "n/a" or null. It should be a SHA-256 hash.” An orange diamond reads: "Too few of the product IDs included in your add to cart events match the Product IDs in your catalog." ‘An orange diamond reads: "Too few of the product IDs included in your checkout events match the product IDs in your catalog.” A green circle reads: "We are detecting this event, but at least one parameter needs action.” Which warning indicates a critical alert?

The red triangle indicates a critical alert because it signifies a fundamental issue with the em (email) value being passed by the Pinterest Tag. This parameter is crucial for accurate audience matching and attribution, and an empty, undefined, "n/a", or null value means this essential data is missing or malformed. The warning explicitly states it "should be a SHA-256 hash," indicating a severe data integrity problem that prevents proper functionality. The orange diamonds for add to cart and checkout events, while important, suggest a mismatch between product IDs in events and the catalog, which can impact reporting but doesn't necessarily break the tag's core function. The green circle indicates that an event is being detected, but a parameter needs action, which is less severe than a completely malformed critical parameter.