Dagenham will appeal the red card awarded to Damien McCrory in the 3-2 defeat to Plymouth.
The left-back was dismissed during injury-time after bringing down Isaac Vassell in the penalty area.
Simon Walton converted the resulting spot-kick to give Argyle all three points.
Managing director Steve Thompson told Daggers' official website: "John Still and his management team watched the match video together yesterday (Sunday).
"They believe the decision to send Damien off for 'denying a goalscoring opportunity' to be wrong and so we will be contacting the FA requesting that the red card is rescinded."