Syntax errors are deviations from the valid sequences permitted in the language. In this case, the string will be used for MPS displays. This code must not equal zero for the perposes of an mpsl file compilation. An attempt was made to compile an algorithm using an element, such as BGRP, for which the SLC database HASH entry was found to be 0. This will be reported if a beampath fails to define a rate limiting type in its RATE blocks.
NONE is required as the default case, and succeeds when no stoppers are in.