Dear Mr.Khairy Soliman,
Yes, its possible, and you can set the general data or company code tab fields ( Company code/ reconciliation Acct/planning group..etc) / mandatory as you required for the given role.
For that go to - SPRO - Flexible Real Estate Management (RE-FX) - Business Partner - Relevant Settings for Business Partner in RE Context - Business Partner Roles - Configure Field Attributes per BP Role -
Here select your required BP role - and click on field grouping option - select company code - by selecting the radio button make it as Required entry (mandatory) / optional entry / hide ..etc
Regards,
Subbarao