ID:13887 VHDL Interface Declaration error at <location>: interface object "<text>" of mode LINKAGE cannot have default expression

CAUSE: In an Interface Declaration at the specified location in a VHDL Design File (.vhd), you used a default expression for the specified interface object of mode LINKAGE. However, an interface object of mode LINKAGE cannot have a default expression.

ACTION: Change the mode of the interface object to IN, OUT, INOUT, or BUFFER, whichever is appropriate; or remove the default expression.