When using the PPFilesByRequest feature, the app is requested
to write process programs as files when needed. For Stream 13
transfers initiated from the host using S7F41R, the file created must
be named exactly the ppid value. For S7F5R uploads, the file name
can differ from the ppid.
ppid - The Process Program identifier.
recipeDir - The directory where the file is to be written.
an ACKC7 error code (0 for success) and the name of
the file written or an error description