Is load module TSSCSRTR strictly used by the TSSSIM utility or are there another components that use it?
TSSCSRTR is not strictly used by TSSSIM. The module is the CA Top Secret router module for CA Security Callable services. These callable services are services specific to CA security software, beyond what is provided by SAF and the USS callable services. These CA callable services are not published security interfaces, and are used to service customized security requests from CA program products.