rdisp/rfc_max_own_used_wp is a SAP Parameter attribute which is used to control Quota for own used work processes 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 .
Quota for the number of dialog work processes that the user can occupy
at the same time. If this value is exceeded, no further resources are
returned to the caller, so that the server does not become overloaded.
The value is given as a percentage. In other words, it is dependent on
the value currently set in the profile.
Caution
This parameter is effective only in dialog mode. If the report is
running in the background or in update mode, it is ignored. The absolute
number of dialog work processes is specified by parameter
See SAP Parameter Documentation for full SAP documentation for this profile parameter.