BatchCannotBeDeletedWhileProcessing
Example
{
	"code": "BatchCannotBeDeletedWhileProcessing",
	"target": "Unknown",
	"details": [
		{
			"code": "BatchCannotBeDeletedWhileProcessing",
			"number": 208,
			"message": "Cannot delete batch while processing.",
			"description": "Batch -0- is in the Processing state and cannot be deleted.",
			"faultCode": "Client",
			"helpLink": "http://developer.avalara.com/avatax/errors/BatchCannotBeDeletedWhileProcessing",
			"severity": "Error"
		}
	]
}
Explanation

This indicates the batch you are trying to delete is in the Processing state. The AvaTax Batch system begins processing batches immediately upon creation, and the batch file cannot be deleted. You can update a batch file to flag it as cancelled.