stat/checks is a SAP Parameter attribute which is used to control Activate runtime checks for SAP statistic 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 can be used to activate checks in the SAP statistics at
runtime. It is only intended for troubleshooting purposes and should not
be activated otherwise.
See SAP Parameter Documentation for full SAP documentation for this profile parameter.