OM data from the MSC comes in the SDM csv data files. Only OM's that have been manually enabled will be in the SDM csv data files loaded by Prospect
Expected data from any of the OM groups not in data file or Prospect reports.
OM has not been enabled, thus not in the SDM OM csv data file from the CBM will not contain the expected OM.
Prospect Ericsson Core 8.0.7, All release levels of Ericsson applications.
Diagnosing the problem
You can find the SDM OM data files in $FLEXDAHOME/data/<MTXNAME>/SDMOM/dist and grep for the OM group you are looking for:
In this case I am looking for the OM "OMMTXHO":
gzcat <MTXNAME>.201208291230.SDMcsv.gz | grep OMMTXHO
Resolving the problem
This is a configuration issue on the SDM. Each OM needs to be enabled on the SDM in order for the data to be in the SDM OM csv data files.