You may want to have Transaction or Query scripts run under a default system user so additional access to tables do not need to be granted to each user. You can use a System Runner to do this.
Step 1: Login to the Administration App as the Admin user, go to Apps, then select the app you want to add System Runners to, then click Edit.
Step 2: Expand Additional Settings and then select your System Runners from the dropdown and hit Save.
Step 3: Select the SAP server and System Runner in your script's settings.