When trying to create a transaction script, you continue to run into the error below.
The system is attempting to execute the function module 'RFCPING' from the function group 'SYST', for which you do not have the appropriate authorization.
Contact your SAP Basis team so that they can make the necessary change to your user's authorization profile and add the SYST function group to your role.
Transaction Authorizations: What authorizations are needed for Transaction
Journal Entry Authorizations: Required SAP Authorization for Journal Entry
For more information, refer to SAP note 1108662.