What does it mean when the UPS tracking site says- Status: Notice Left?

what does it mean when the UPS tracking site says- Status: Notice Left Detailed Results: Notice Left, January 30, 2010, 10:59 am, BOSTON, MA 02115 Arrival at Unit, January 30, 2010, 10:48 am, BOSTON, MA 02115 Processed through Sort Facility, January 30, 2010, 2:45 am, BOSTON, MA 02205 Processed through Sort... show more what does it mean when the UPS tracking site says- Status: Notice Left
Detailed Results:

Notice Left, January 30, 2010, 10:59 am, BOSTON, MA 02115
Arrival at Unit, January 30, 2010, 10:48 am, BOSTON, MA 02115
Processed through Sort Facility, January 30, 2010, 2:45 am, BOSTON, MA 02205
Processed through Sort Facility, January 28, 2010, 8:19 pm, KEARNY, NJ 07032
Acceptance, January 28, 2010, 4:25 pm, RIDGEWOOD, NJ 07450

does notice left mean it was received?
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