HubSpot Logs Show INVALID_OPTION Error For a Prospect

The INVALID_OPTION Error is caused by a property in HubSpot not having an option that is submitted for the mapped field on Captello.
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​For example:
Let's say we have a Captello field named 'Customer Interests'
that is mapped to a HubSpot property, also named 'Customer Interests'

The field on Captello has the following options: Phones, Tablets & Laptop <- (Notice it's a singular without an S)

The property on HubSpot has the following options: Phones, Tablets & Laptops <- (popular with an S)

If you submit a lead with the value "Laptop", you will get the error, since "Laptop" is not a value on HubSpot, instead, it should have been submitted as "Laptops" to be accepted by HubSpot.