Currently the Call Transaction activity (UiPath.Core.Activities.SAP.CallTransaction) prefixes the provided transaction code with /N (open in the current window)
Thank you for the mockup screen. Just a note that some SAP environment allows a maximum of two New Sessions. Call Transaction is more intuitive for users.
Sorry for reviving this thread, but along with the Modern version of Call Transaction (starting with v24.10.6) we also added this requested feature: Activities - Call Transaction