f:ServiceRequest category: minimum cardinality of 'category' is 1 category: maximum cardinality of 'category' is 1 priority: minimum cardinality of 'priority' is 1 code: minimum cardinality of 'code' is 1 requester: minimum cardinality of 'requester' is 1 performer: maximum cardinality of 'performer' is 1 reasonReference: minimum cardinality of 'reasonReference' is 1 reasonReference: maximum cardinality of 'reasonReference' is 1