TF210007: A GROUP element that contains SPLITTER and COLUMN elements must specify exactly three COLUMN elements in the following ...

TF210007: A GROUP element that contains SPLITTER and COLUMN elements must specify exactly three COLUMN elements in the following sequence: (1) a COLUMN to the left of the splitter (2) a COLUMN containing only the SPLITTER element, and (3) a COLUMN to the right of the splitter. 

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