1. A method of configuring an array attribute for prediction systems, the method comprising: determining a set of unique value fields for an array attribute, wherein a size of the array attribute corresponds to a total number of unique value fields in the set; receiving a set of values for the array attribute, wherein a size of the set of values that are received is independent of the size of the array attribute; determining if any of the received values are duplicates; determining if each of the unique value fields has a corresponding value within the set of received values; and configuring the received values if duplicates have been detected.