SNAX/XF and SNAX/APN Configuration and Management Manual
PTrace Reference for SNAX/XF and SNAX/APN
SNAX/XF and SNAX/APN Configuration and Management Manual—425836-006
15-21
Line-Handler Trace Records
Line-Handler Trace Records
The following pages describe the trace records generated by the line handler for all 
types of lines.
003: PIU^TRACE^ID (PIU In)
This trace record contains the inbound path information unit (PIU) received by SNAX 
level 3 from SNAX level 2.
This trace record consists of the transmission header (TH), the request/response 
header (RH), and the request/response unit (RU). 
PU index nnn
gives the physical unit (PU) address.
PIU bytes: nn
gives the number of bytes in the PIU. This is the total length of the PIU, even if a 
small RECSIZE value in the TRACE command caused the data in the trace record 
to be truncated.
FID2 OIS EFI OAF(02) DAF(01) SEQ #0
is a symbolic representation of the contents of the transmission header (TH), using 
the standard IBM abbreviations. This line can include the following abbreviations: 
The TH shown above is for a FID2 PIU with mapping field set to only in segment 
(only in chain). The origin/destination assignor indicator bit is 0, and the expedited 
Record Type : 003 PIU^TRACE^ID
 PIU In for PU index 200. PIU bytes: 12
 FID2 OIS EFI OAF(02) DAF(01) SEQ #0
 REQ FMD FI BC EC DR1I RU: 710306
 2D00 0102 0000 0B80 0071 0306  !- q  !  
!
FIDn Format identification n (almost always, FID2; the field 
descriptions below assume FID2)
FIS, LIS, MIS,
or OIS
Mapping field: first in segment, last in segment, middle in 
segment, or only in segment
ODAI Origin/destination assignor indicator (if this abbreviation is 
present, the ODAI bit is 1; if absent, the bit is 0)
EFI Expedited flow indicator (if this abbreviation is present, the EFI 
bit is 1; if absent, the bit is 0)
OAF(n) Origin address field (n is the value of the field)
DAF(n) Destination address field (n is the value of the field)
SEQ #n Sequence number field (n is the value of the field)










