SCH1700 - 1799
||Threshold data must be defined prior to group data.
||Threshold block does not exist.
||Threshold block already exists.
||Threshold value out-of-range.
||All groups must be removed before the threshold block may be removed.
||Loop to be removed for member x does not match data for member x.
||Invalid loop number (i.e. loop is already a member, loop is not disabled or is not an
||Group number is out-of-range (SL-1A and LE 1-5, VLE 1-31).
||Loop number (address) is out-of-range.
||RPE2 package not present on tape.