id A unique ID for the element. A unique ID for the element. minOccurs Minimum number of times the element can occur. Value can be >=0. Default is 1. Minimum number of times the element can occur. Value can be >=0. Default is 1. maxOccurs Maximum number of times the element can occur. Value can be >=0 or unbounded. Default is 1. Maximum number of times the element can occur. Value can be >=0 or unbounded. Default is 1.