Before revision:  We work in the general setting of admissible portfolio wealth processes as laid down by Y. Kabanov (1997) under a substantially relaxed concatenation property and adapt the FTAP proof variant obtained in Cuchiero and Teichmann (2014) for the classical small market situation to large financial markets.
After revision:  We work in the general setting of admissible portfolio wealth processes as laid down by Y. Kabanov (1997) under a substantially relaxed concatenation property and adapt the FTAP proof variant obtained in \mbox{%DIFAUXCMD CT:14 for the classical small market situation to large financial markets.