Schema.org micro-markup. What type of target is valid for the itemReviewed property?

Question

Google

Hello.
I am doing micro-markup to revoke currency exchange. For this, I chose itemtype Review. The exchange service itself is designated as CurrencyConversionService. If I set Review as an itemprop for CurrencyConversionService - the check swears. If I add itemprop="itemReviewed" itemscope itemtype=" schema.org/Service " or itemtype=" schema.org/CurrencyConversionService " to Review, it also swears "invalid target object type".
Can you please tell me what are the targets for itemReviewed?

Answer 1

Didn't find an answer. I had to designate the exchange service as Organization instead of CurrencyConversionService and do without itemReviewed. It looks like it's a bug of Google.

Answer 2

In September 2019, the list of available objects was cut https://webmasters.googleblog.com/2019/09/making-r...
Organization is in the list of allowed objects, but CurrencyConversionService and Service are not