[UK-CONTEST] Who loses points for bad QSO?

[Chris G4FZN]

If, during a contest exchange, station A copies station B's report and
locator all ok, but station B makes an error in logging station A's report,
is it always BOTH stations who lose points for that QSO, or just the one who
copied or transcribed the details wrongly? Therefore, for contacts that
appear in a UBN report sent to me following a contest, is it always correct
to assume the other station has lost the points for that QSO too?

 

73,

Chris

G4FZN