No year given for re-used network code 7A.
Use a year to disambiguate:
7A:2008
(2008–2008) Lake Toba project, GIPP GFZ Potsdam, Germany
7A:2019
(2019–2019) Multi-scale imaging of the Main Pamir Thrust faults within the framework of CaTeNA project – Climatic and Tectonic Natural Hazards in Central Asia