[OpenStack-I18n] Need help in making sense of a message in Heat

Hello, Could anybody kindly elaborate on the meaning of a condition in a message: "The flag which represents condition of reserved resources of the lease. If it is true, the amount of reserved resources is less than the request or reserved resources were changed." The obscure part for me is "less than the request or reserved resources were changed." Context: heat/engine/resources/openstack/blazar/lease.py:233 TY! -- С уважением, Дронова Юлия