RDP 8.5.1 Downloaded PTF's list - Product 5761999?

I have downloaded missing PTFs that RDP has identified for me (RDP Release 8.5.1).
I downloaded PTFs: SI46774, SI47805, SI36348, SI47837
Other PTFs came along with the ones selected.

When I downloaded the missing PTFs I got the following list:

PTF Product Status
SI47837 5770WDS Already on system
SI47805 5770SS1 Already on system
SI46774 5770SS1 Already on system
SI36348 5761JV1 Already on system
SI36161 5761JV1 Already on system
SI36100 5761JV1 Already on system
MF46838 5761999 Downloaded
SI35416 5761JV1 Already on system
MF46840 5761999 Downloaded
MF46839 5761999 Downloaded
SI34519 5761SS1 Downloaded
MF45844 5761999 Downloaded
MF44980 5761999 Downloaded
SI30263 5761JV1 Already on system

I went to display the PTFS and most are in save files and need to be installed.
The PTFs for Product 5761999 have me puzzled - Product 5761999 is not on my system.
I cannot even view the status of the PTFs because the system does not recognize the product on my system.

Should I be concerned?

TIA
Paul

(message cross-posted to WSC and midrange lists.)