TABLE_NO_MATCH
Loosen one, or let the step carry on.
No row matched this step's filters.
TABLE_ROW_AMBIGUOUS
Pick a column whose values are unique.
More than one row matched the row this step changes.
TABLE_ROW_NO_MATCH
Nothing was changed.
No row matched the row this step changes.
TABLE_WHICH_ROW_MISSING
Pick a column or give a Row id.
This step does not say which row to change.