rspo/global_shm/action_list is a SAP Parameter attribute which is used to control Startup-Gr####e f##r Spool-Aktions-Liste 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 .
Every instance holds a list of actions of configured spool work
processes in oder to be able to display the action in question in the
process overview. This list is dynamically expanded if the startup size
is too small.
See SAP Parameter Documentation for full SAP documentation for this profile parameter.