Can't Create Objects Blue Pop Up Box Messages

I keep getting these messages on a SIM I manage and have placed objects. Can anyone tell me why and how I can stop these? They are popping up every 2-3 seconds on my lower right screen and clogging my IM box!! It's maddening. Here is a sample and the coordinates vary, so I'm not sure what it is, but I've gone through the parcel it's located on and reset all the items to the group name. Is there a way to FIND this/these items and how?? Thanks!!
[7:16] Can't create object 'Object' because the parcel 'SUMMERTIME ' at MC Estates 22.6578, 95.7244 does not allow it.

Do you have any object that self rez prims, you will get that spam if the parcel wont allow it or is full.