[c-nsp] %IPC-5-WATERMARK: What is this?

[Max Clark]

%IPC-5-WATERMARK: 1627 messages pending in xmt for the port Primary
RFS Server Port(10000.A) seat 10000

I have not found a good explaination for what this is, what causes it,
and how to resolve it - or if it's even something to be concerned
about. Can anyone share some more information for what this is?

This is from a 6509 Sup 720 3BXL running
s72033-adventerprisek9_wan-mz.122-18.SXF3.bin.

Thanks,
Max