Question on v.support

We generally get this message after a v.patch of labeled vector files.
Two labels somehow end up on the same line. I don't know an easy way
to fix it other than to unlabel the line in v.digit, exit, v.support
and go back to v.digit and see if the other label came up. If any
one knows another (easier) way let me know. It would be helpful if
the line (area? point?) in question could be highlighted, in this
case line 1950.

Sometimes when we run v.in.tiger12 with -t option (to run v.support)
it gives a warning saying:

line 1950 label:1855367 matched another label:1855368

  What does this mean ? Can we always ignore it ?

Thankyou,
Laxmi P. Musunur