Can I use both Offer and AggregateOffer?

Question

I have a product page, and the product can be bought from different sellers.

I saw Google seperates between AggregateOffer and Offer, as if I should choose either that tag or the other.

I tried using both like this, and it returned a markup error when testing with the Google tool, because I used offers twice:

{
  "@context": "https://schema.org/",
  "@type": "Product",
  "name": "MyName",
  "image": [
    "https://www.example.com/image1.jpg",
    "https://www.example.com/image2.jpg"
   ],
  "offers": {
    "@type": "AggregateOffer",
    "lowPrice": "100",
    "highPrice": "150",
    "priceCurrency": "USD",
    "offerCount": "3"
  }

      "offers": {
    "@type": "Offer",
    "url": "https://www.example.com/page/",
    "priceCurrency": "USD",
    "price": "100",
    "itemCondition": "https://schema.org/NewCondition",
    "availability": "https://schema.org/InStock",
    "itemOffered": "Thing"
  }

}

I want to give as much info as possible, and according to Google, info such as availability applies to Offer rather than AggregateOffer.

So I have two options:

Either to use only one of the above Offer markups, or use the AggregateOffer and add inside it fields like availability, even though I did not see this as an example anywhere.

What will be better to do?

Answer 1

An AggregateOffer can reference all its Offer items:

{
  "@context": "https://schema.org/",
  "@type": "Product",

  "offers": {
    "@type": "AggregateOffer",
    "offerCount": 3,

    "offers": [
      {
        "@type": "Offer"
      },
      {
        "@type": "Offer"
      },
      {
        "@type": "Offer"
      }
    ]

  }

}

According to Google’s documentation about AggregateOffer, Google’s product rich result makes no use of the individual Offer items an AggregateOffer consists of, though.

Also note that AggregateOffer can have all the properties Offer can have (like availability), because Offer is the parent type, but these properties then apply to the aggregate offer itself, not to the individual offers it consists of, so most of these properties don’t make sense in this context.