Two names on one standard
The edge test standard is ANSI/SPRI/FM 4435/ES-1: a revision of ANSI/SPRI ES-1 that brings in parts of FM 4435 (2011).
The current edition is ANSI/SPRI/FM 4435/ES-1 2022, approved November 21, 2022. A building code names the edition it adopts, so check which edition your adopted code references.