SDO11 — Organization always has a single instance of OrganizationProperty

This method is used to set an OrganizationProperty instance to Organization, and an Organization always has a single instance of OrganizationProperty (it does not have multiple instances of OrganizationProperty), as shown in the class diagram in Appendix B. Therefore, setOrganizationProperty() would be better than addOrganizationProperty(). addOrganizationProperty() implies that multiple instances of OrganizationProperty can be assigned to Organization. Other operations in this specification are named based on this convention. For your reference, see the operations in Configuration interface (setDeviceProfile(), addServiceProfile(), etc.).