The LUW field allows the application program to identify each conversation for accounting and sync point purposes. The layout of the LUW field follows:

Byte

Meaning

0

Length of the LUW field (not including this length byte)

1

Length of the network-qualified LU network name

2–n

Network-qualified LU network name

n+1–n+6

LUW instance number

n+7–n+8

LUW sequence number