Hi Ahmad,
Before running the report R_S4_PRE_TRANSITION_CHECKS did you implemented all required notes and completed the manual activities mentioned in the note 2182725?
Also, before you run the above report you need to make sure you are running the maintenance planner to check the components available in your source system are compatible with the S/4 HANA. All the add-ons or 3rd party components are not supported with S/4 HANA.