[Description] There is a mismatch in whitespace between source and target content or the text violates specific rules related to the use of whitespace. [Example] A source segment starts with six space characters but the corresponding target segment has two non-breaking spaces at the start. The text uses a run of 12 space characters instead of a tab character to align numbers in a table. Two space characters appear after a period even though only a single space is to be used. [Scope] S or T [Value] 
whitespace