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Add method needs to return an error code indicating whether or not the add request was accepted, and for errors should indicate the problem with the data.

Interval, possible values:

None - I will backup manually
12:00AM - 12:29AM
12:30AM - 12:59AM
1:00AM - 1:29AM
1:30AM - 1:59AM
2:00AM - 2:29AM
2:30AM - 2:59AM
3:00AM - 3:29AM
3:30AM - 3:59AM
4:00AM - 4:29AM
4:30AM - 4:59AM
5:00AM - 5:29AM
5:30AM - 5:59AM
6:00AM - 6:29AM
6:30AM - 6:59AM
7:00AM - 7:29AM
7:30AM - 7:59AM
8:00AM - 8:29AM
8:30AM - 8:59AM
9:00AM - 9:29AM
9:30AM - 9:59AM
10:00AM - 10:29AM
10:30AM - 10:59AM
11:00AM - 11:29AM
11:30AM - 11:59AM

delete()

Arguments for delete:
netid of owner
nodename (needs to be unique, and exist)
datestamp for date to delete, formatted as Oracle date (31-JAN-13). This is awkward for ServiceNow, but native for NetBill. Furthermore, ServiceNow already has a method that does this for previous Oracle interactions.

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