UnterminatedValueError
Example
{
	"code": "UnterminatedValueError",
	"target": "Unknown",
	"details": [
		{
			"code": "UnterminatedValueError",
			"number": 21,
			"message": "Incorrect $filter parameter.",
			"description": "The filter contained a value that was not properly terminated: -0-",
			"faultCode": "Client",
			"helpLink": "http://developer.avalara.com/avatax/errors/UnterminatedValueError",
			"severity": "Error"
		}
	]
}
Explanation

A paramter value in the $filter of the query was not terminated properly. Check out this guide for filtering in REST for more information on filters and parameters. Additionally, check the documention for the method or model used to gain further insight into the filtering guidelines.