HP-UX SNAplus2 CPI-C Programmer's Guide (June 2003)

Concepts
Basic Conversations
Chapter 1 51
Bit 0 of byte 0 of the LL (the most significant bit) is used to indicate
length continuation (segmentation). The following example shows ten
bytes of data (each data byte has the value DD) split into three GDS
segments. The first and second segments each contain four bytes of data,
and the last segment contains two bytes of data.
8008 12FF DDDD DDDD
8006 DDDD DDDD
0004 DDDD
The following values for the LL field are not valid:
• 0x0000
• 0x0001
• 0x8000
• 0x8001
Error Log Data
In case of an error or abend in a basic conversation, a program can send
an error message, in the form of a general data stream (GDS) error log
variable, to the partner LU.