Google JSON Review Snippet not validating - json

Question

I'm using the following JSON to produce a review snippet:
<script type="application/ld+json">
{
"#context": "https://schema.org/",
"#type": "Review",
"name": "Great service from the start.",
"author": {
"#type": "Person",
"name": "Chris Tonich"
},
"reviewBody": "Very thorough...would highly recommend!",
"aggregateRating": {
"#type": "AggregateRating",
"ratingValue": "4.9",
"bestRating": "5",
"ratingCount": "110",
"itemReviewed": {
"#type": "Product",
"image": "https://www.homeintegrity.com.au/wp-content/uploads/2020/12/hi-new-logo2.jpg",
"name": "Pre-Purchase Building Inspections",
"priceRange": "$$",
"telephone": "08 8375 8130",
"address" :{
"#type": "PostalAddress",
"streetAddress": "PO Box 163",
"addressLocality": "Scarborough",
"addressRegion": "WA",
"postalCode": "6019",
"addressCountry": "AU"
}
}
}
}
</script>
The Google Rich Snippet Test says:
Why am I receiving the error when the Review contains aggregateRating which contains itemReviewed?
Why does it say I rated a Review rather than an Item?
Help appreciated.

Answer 1

Your structure is not according to the schema found on https://schema.org/
A Review must contain a field itemReviewed (or be embedded in the object, which is reviewed). (see examples at https://schema.org/Review)
A Review on the other hand must not contain an AggregateRating (see https://schema.org/AggregateRating), because an AggreateRating may only be a sub-node of a Brand, CreativeWork, Event, Offer, Organization, Place, Product, or Service. Note that these types may contain a Review too.
Your structure roughly is as follows:
Review "Great service from the start."
Author "Chris Tonich"
Aggregate rating "4.9"
Product "Pre-Purchase Building Inspections"
Address "6019 - ..."
What you probably want is something along the lines of:
LocalBusiness "Pre-Purchase Building Inspections"
Address "6019 - ..."
Review "Great service from the start."
Author "Chris Tonich"
Aggregate rating "4.9"