hasMerchantReturnPolicy

This term is proposed for full integration into Schema.org, pending implementation feedback and adoption from applications and websites.

Thing > Property > hasMerchantReturnPolicy

Indicates a MerchantReturnPolicy that may be applicable.
Values expected to be one of these types
MerchantReturnPolicy
Used on these types
Organization
Product
Supersedes
hasProductReturnPolicy

Source

https://github.com/schemaorg/schemaorg/issues/2288