FTAM/9000 Programmer's Guide

Chapter 3 159
HP FTAM/9000 Data Structures
inout_dcb
additional_size parameter is large enough to hold all possible return
information (e.g., diagnostics and returned data); otherwise, you
receive an FTE004_OUTPUT_BUFFER_OVERFLOW error.
NOTE Your application must not perform any operations on or with an inout
DCB parameter until em_-wait() indicates the call is complete. Failure to
follow this rule can cause serious internal errors to occur, resulting in
unpredictable behavior or software failures.