The EMC API, EMCSAI, is not distributed in the ASTEX 2.8 Loadlib.
The EMC API is no longer distributed as part of the ASTEX product. It is only distributed by EMC. The EMCSCF loadlib must either be in the ASTEX Steplib concatenation or in the system linklst. The EMCSCF started task must be started before starting ASTEX.