ID:17034 WYSIWYG I/O primitive "<name>" has missing or unconnected data_in input port

CAUSE: The specified WYSIWYG I/O primitive is in Input or Bidirectional mode (that is, its OPERATION_MODE parameter is set to INPUT or BIDIR), but its data_in input port is missing or is unconnected. This message usually occurs when a lower-level hierarchy is not connected to its parent hierarchy at some ports and, as a result, the data_in port is unconnected.

ACTION: Check the design to make sure the data_in port of the WYSIWYG I/O primitive is connected correctly.