Onsemi FPF1009 and FPF1009R

Looking for onsemi p/n FPF1009 (FPF1009CT-ND), one can encounter also the p/n FPF1009R (FPF1009RCT-ND) with “R” suffix

It is also can be seen on onsemi website:

What is the difference between these 2 p/n’s?
onsemi official documentation does not explain the meaning of this suffix

The response that has been received after sending the enquiry to onsemi is:

There are no technical or electrical differences between the two. The “R” device was setup for specific customer, but is acceptable for use with any customer.”