Reverse Charge

No... its defined for specific scenarios

Please google it. . 

No not to  all transactions It is applicable to specified supply of goods/services 

Reverse charge mechanism(RCM)  is applicable on recipient for specified services such as GTA services, sponsorship service to firm/corporate, import of service, legal services supplied to business entity 

Other than above, RCM on taxable supplies of goods/services by unregistered persons from 1st July 2017 to 12th Oct 2017. On hold from 13th Oct 2017 to 30th September 2019.

Credit of RCM can be availed to extent related to taxable supplies /exports done by recipient

No not to  all transactions It is applicable to specified supply of goods/services 

Reverse charge mechanism(RCM)  is applicable on recipient for specified services such as GTA services, sponsorship service to firm/corporate, import of service, legal services supplied to business entity 

Other than above, RCM on taxable supplies of goods/services by unregistered persons from 1st July 2017 to 12th Oct 2017. On hold from 13th Oct 2017 to 30th September 2019.

Credit of RCM can be availed to extent related to taxable supplies /exports done by recipient

Originally posted by : Suman Roy
	GST Registered Security Services supplied to Registerd Taxable person to a body corporate is liable to pay GST under reverse Charge?

Yes 

Except if Service Provider is Body Corporate in Your QUERY