ID:13927 VHDL syntax error at <location>: <text> is an illegal identifier in VHDL

CAUSE: In a VHDL Design File (.vhd) at the specified location, you used the specified identifier, but the identifier is illegal in VHDL. Legal VHDL identifiers must begin with a letter and can contain only letters, digits, and non-consecutive underscore (_) characters. For example, FOO, FOO9, and FOO_BAR are legal VHDL identifiers, but 9FOO and FOO__BAR are not.

ACTION: Change the identifier into a legal VHDL identifier by removing initial digits, unsupported characters, and consecutive underscores.