ANY DECISION on changing thepenalty for an interchange breach will not be made until post-season. 

The AFL admitted on Monday thedecision to award a free kick against Geelong for a breach in the last quarterof Saturday night's game against Hawthorn was an error, but the penalty wouldnot be changed mid-season. 

The punishment now is a freekick and a 50m penalty, after which Hawk David Hale kicked a goal trimming themargin to nine points with 10 minutes remaining. 

The interchange official thoughtGeelong's Josh Hunt had entered the ground early to replace Tom Lonergan, whothen turned around and re-entered the field. 

But Geelong had just 16players on the ground before Hunt and Lonergan went back on. 

Following the mistake, AFLofficials have been briefed to be absolutely certain a breach has occurredbefore calling for the game to be stopped and awarding a penalty. 

Post match, both coachescalled for the rule to be reviewed. 

Geelong's Chris Scott alsospoke to AFL football operations manager Mark Evans in the rooms. 

"The bottomline is, I think the rule is a poor rule, especially when a mistake ismade," Scott said. 

"A goal hadbeen kicked. There was time to double check it, maybe even triple check aswell." 

Hawks coachAlastair Clarkson said the penalty was too harsh. 

"The Leagueshould look at it, because it's a harsh penalty for what is a pretty honestmistake ... sometimes by a volunteer interchange steward." 

The AFL also trialled Hawk-Eyetechnology at the three games played at the MCG on the weekend to see if itwould aid the score review system in place since 2012. 

An AFL spokesperson said thetrial showed there was a potential for thetechnology to reduce the time thescore review official takes to make a decision. 

"The system uses allcamera angles displayed together and time-synchronised, and that is ofsignificant benefit." 

However the AFL remainsadamant that it is yet to see a system that will deliver a conclusive verdicton every score. 

A decision on whether toconduct a further trial later in the season will be made after all theinformation from the weekend's trial is considered.