SAP Message APPLG238 - GP: There is no data source (name in DC) for this column of the tree

Diagnosis This message is a warning that could indicate a programming error. An item number was specified using the attribute ITEM_ORDER in pointcustomizing (CL_CU_POINT) without a variant key. However, no attributename in the data container was specified for this item number (methodSET_DC_NAMES in the graphics proxy). The relevant column cannot be supplied with data so it is displayedempty.