Standard FM to call any SAP Transaction in the Program an altrernate to CALL TRANSACTION statement

To call any SAP Tcode from  within program when a user chooses any menu options or selects any button on the GUI we use CALL TRANSACTION 'XXXX' in the program. An alternative to this SAP provides a standard FM 'ABAP4_CALL_TRANSACTION' which can be used as an alternative to CALL TRANSACTION statement where we have the authority check  for the user and a lot more variants to the CALL TRANSATION statement exists.
Test the FM.

 Provide the transaction code name and execute.

 So here it calls the Transaction .

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