One or more data items of one or more types are received, wherein each data item is associated with one or more attributes, and wherein each attribute is associated with an attribute name and an attribute value. A key is calculated for each attribute, and a determination as to whether the key is located in a dictionary is made. The key is added to the dictionary based on the determination along with an attribute description, and a determination of a number of occurrences of one of the one or more items to the number of all the one or more items in a set is made. Based on this number of occurrences attributes are classified as either mandatory, expected or optional in the generated template for the corresponding info item type.