ItemCodesAreAllSame
Example
{
	"code": "ItemCodesAreAllSame",
	"target": "Unknown",
	"details": [
		{
			"code": "ItemCodesAreAllSame",
			"number": 2210,
			"message": "All item codes for the document are the same.",
			"description": "In order for the company to be certified, all the ItemCodes for documents cannot be the same, in the past month or among the last 100 documents.",
			"faultCode": "Client",
			"helpLink": "http://developer.avalara.com/avatax/errors/ItemCodesAreAllSame",
			"severity": "Error"
		}
	]
}
Explanation

This error indicates that all of the item codes for the document are the same. For company certification, ItemCodes in recent documents must be different. Recent documents include all those in the past month or the last 100 documents. Please update your ItemCodes (if applicable) to attain company certification.