icm/wp_roll_timeout is a SAP Parameter attribute which is used to control Maximum work process blocking time 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 .
You can use this parameter to specify the maximum length of time
that a work process can run when reading data using the ICM, without
being rolled out.
With slow network connections and large quantities of data, the read
length can become very long (<(>><)> 600 seconds).
Note: This parameter must be set to a value smaller than
See SAP Parameter Documentation for full SAP documentation for this profile parameter.