ID:10520 VHDL Conditional Signal Assignment error at <location>: waveform that contains UNAFFECTED keyword cannot contain any waveform elements

CAUSE: In a Conditional Signal Assignment at the specified location in a VHDL Design File (.vhd), you used the UNAFFECTED keyword for a waveform. However, you also used one or more waveform elements in the waveform. A waveform that contains the UNAFFECTED keyword cannot contain any waveform elements.

ACTION: Remove either the UNAFFECTED keyword or the waveform element(s) from the waveform.