String value to test the Identity attribute, Account attribute, or Entitlement specified in the key w/r/t the specified operation. If this criteria is a leaf node, that is, if the operation is one of EQUALS, NOT_EQUALS, CONTAINS, STARTS_WITH, or ENDS_WITH, this field is required. Otherwise, specifying it is an error.
Array of child criteria. Required if the operation is AND or OR, otherwise it must be left null. A maximum of three levels of criteria are supported, including leaf nodes. Additionally, AND nodes can only be children or OR nodes and vice-versa.