ID:12155 SignalTap II node name "<name>" cannot be same as name of existing node in current design

CAUSE: You added the specified node to a SignalTap II File (.stp) for the current design. However, the SignalTap II node name is the same as the name of a node that already exists in the current design.

ACTION: Either rename the node in the STP File or rename the node in the current design.