icm/max_timeout_wp is a SAP Parameter attribute which is used to control Maximum Timeout in ms until ICM Worker Thread rolls out information. This is available within R/3 SAP systems depending on the version and release level.
Below is the standard documentation available and a few details of the attributes values .
This parameter describes how long an ICM Worker Thread waits for data
from the network before the connection is passed to a watchdog thread
for monitoring.
See SAP Parameter Documentation for full SAP documentation for this profile parameter.