Castleford head coach Daryl Powell has been given a suspended fine for entering the field of play during his team's 42-12 Betfred Super League defeat at home to St Helens in March.
The Rugby Football League imposed a fine of £5,000 for a breach of its operational rules but suspended it until the end of the season after receiving an assurance that it will not happen again.
A spokesman said the league also took into account the club's approach and assistance with the matter.
Powell stormed across the field during a break in play towards the end of the first half and clearly vented his anger at the performance of some of his players.