Errors in Google SDTT for Schema.org Product, Offer, and PriceSpecification - schema.org

Question

I'm new with Schema.org markup, so I've actually come up with the following codes for my real estate markup, and Google testing keep saying I shouldn't use offer for priceSpecification. I'm so lost now.
{
"#context": "http://schema.org/",
"#type": "Product",
"name": "Nodorus - Precinct 17",
"image": "http://www.setiaalam.com.my/images/products/p17/nodorus-c.jpg",
"description": "A distinct modern link residence set amidst award-winning green spans, wetland wonders and multiple amenities. Come home to articulately crafted spaces where architecture and nature's beauty infuse home with fresh chic. Rejoice in this cosy new addition to Setia Alam North.",
"additionalType": "Product",
"Offer": {
"#type": "PriceSpecification",
"priceCurrency": "RM",
"priceSpecification": {
"minPrice": "593000",
"maxPrice": "890000"
},
"availability": "http://schema.org/InStock",
"seller": {
"#type": "Organization",
"name": "S P Setia"
}
}
}

Answer 1

If you want to add an Offer for a Product, you have to use the offers property.
So instead of this (which doesn’t make sense, because Offer is not a property):
{
"#context": "http://schema.org/",
"#type": "Product",
"Offer": {}
}
You have to use this:
{
"#context": "http://schema.org/",
"#type": "Product",
"offers": {}
}
The type of the offers value should be Offer, not PriceSpecification.
The PriceSpecification can be added to the Offer via the priceSpecification property.
So the structure could look like:
{
"#context": "http://schema.org/",
"#type": "Product",
"offers": {
"#type": "Offer",
"priceSpecification": {
"#type": "PriceSpecification"
}
}
}