Sections become mismatched when all the threads in a batch block at different Enter or Exit operations. This situation can occur when a sequence implements a conditional flow of execution as a result of preconditions, post actions, or other flow control operations.

When TestStand detects mismatched sections, the thread at the Enter or Exit step that appears earliest in the hierarchy of sequences and subsequences proceeds as if all threads in the batch are at the same step.

When multiple Enter and Exit operations are equally early in the hierarchy of sequences and subsequences, Enter operations proceed first.