Is it possible to use a command in order to place the cursor in the field for the transaction code?

This is not possible with the "SetCursor" which allows you to put the cursor on fields within the screen area, but not into the OK-code entry field.

However, with GuiXT Controls you can use SAP GUI scripting for this purpose:

GuiXT Script:

CallVBSAsync SetFocusOK


Function SetFocusOK()


End Function