HP-UX SNAplus2 CSV Programmer's Guide

Common Service Verbs Reference
TRANSFER_MS_DATA
Chapter 280
system return code is returned
through the secondary_rc . If the
problem persists, consult the System
Administrator for corrective action.
For the meaning of the operating
system return code, refer to your
operating system documentation.
This return code may also indicate
that the application issuing the verb
was invoked using the Windows
function SendMessage instead of
PostMessage; the application cannot
issue any verbs in this state. For
more information, see “Windows
Considerations”.