Warrington have received a £2,000 fine for breaching 19-man squad protocol.
The charge relates to the late addition of Stefan Ratchford to Wire’s squad for the Challenge Cup semi-final win against Hull FC.
An statement explained: “According to operational rules, clubs must declare their 19-player squad of players at noon two days prior to the match.
“Subsequent changes to declared squads are permitted in the event of injuries or other exceptional circumstances, but must be supported by formal notification to the RFL.
“Amendments should be sent as soon as a club is aware that a change is required.
“The club accepts that it failed to formally advise the RFL of the amendments within the timeframes and guidelines set out.”