ID:271005 Can't create assignment -- source "<name>" and destination "<name>" already specified for point-to-point assignment

CAUSE: You specified an instance of the ALTERA_ATTRIBUTE assignment as either the source or destination of a point-to-point assignment; however, the point-to-point assignment already contains the specified source and destination values. The Quartus Prime software cannot create the assignment unless the attributes, attribute values, and attribute format are legal.

ACTION: Modify the assignment so that you do not specify either the source value or destination value. You can then use the ALTERA_ATTRIBUTE instance as the source or destination value of the point-to-point assignment.