Now that you have created the table group, you must specify the grammar root for the table group, and for each table in the group.

To specify the grammar root:

• In the Table Grammar panel, double-click the Observation folder.
• When the Changing the grammar root will invalidate the grammar roots of this node's children window appears, click Yes.
• Select the Observation segment group to be the grammar root:

Setting the Grammar Root for the Observation Table Group

• In the Table Grammar panel, double-click the ObservationRequest table. (You may need to expand the Observation folder first.)
• When the information window appears, click OK.
• Select the OBR segment to be the grammar root:

Setting the Grammar Root for the ObservationRequest Table

• Close the Table Mapping window that appears; you will deal with the table mappings later.
• In the Table Grammar panel, double-click the ObservationResult table.
• When the information window appears, click OK.
• Select the OBX segment to be the grammar root:

Setting the Grammar Root for the ObservationResult Group

• Close the Table Mapping window that appears; you will deal with the table mappings later.

	After you set the grammar roots, you will notice errors associated with the ObservationRequest table and warning messages associated with the ObservationResult table. You will fix these errors in the next section.