The AFL announced on Wednesday - 10 days after the incident - that the North Melbourne coach would not be fined for the misdemeanour.
The Kangaroos lost the match at the SCG by 36 points, after which Scott went onto the arena and joined his players for the presentation of a trophy to the Swans.
Scott asked the goal umpires if he could ask a question about the review system.
The umpires said 'yes' before reporting the exchange in the umpires' post-match de-brief.
At issue was a denied goal to North ruckman Todd Goldstein, with doubt about whether Swans defenders had touched the ball.
"I clearly was in the wrong," Scott told 3AW on Wednesday night.
"The circumstances surrounding the approach were a little bit unique in that there was a presentation ... and the goal umpires happened to be just basically out in the centre filling out their paperwork.
"The approach was certainly a very respectful one.
"I asked one of the goal umpires if I could in fact ask him a question and he said, 'Yeah, sure.' So I figured there was no issue. There was no abuse. It was a cordial discussion just around the video review system. But he was obviously obligated to make that report."
Asked whether the goal umpire should have told him he couldn’t ask a question, Scott said: "Well in fact he should've. And Adrian (Anderson, the AFL football operations manager) made that clear too."
Scott said Anderson had also made it "very clear" that for the good of the game coaches could not approach umpires.
"And I accept that," Scott said. "I think it's not a good look. We're trying to attract umpires to our game ... you have to draw the line somewhere.
"It creates potentially a dangerous situation ... I'd hate to see the crowd get incited because a coach approached an umpire.
"Already the umpires cop too much abuse. I think it's a blight on our game - anything coaches can do to strengthen the relationship between the umpires and supporters, then we should do that."
In his post-match news conference after the loss to the Swans, Scott put his concerns about the video review system squarely on the table.
"You'd love the AFL to clarify - what's the rule? Is it the lesser score, is it advantage (to) the scoring team when it's inconclusive? They're making it up as they go along at the moment," he said at the time.
"Do you guys (media) know what the rule is - if it's inconclusive what do they do?
"Ask the umpires. But I know that when I ask the umpires I get nothing out of them.
"I defy anyone to say that (Goldstein's disallowed goal) was conclusive."
Anderson issued a 'please explain' to Scott, who was given until last Thursday to respond.
The AFL said in a statement: "In imposing a warning, Mr Anderson recognised Brad Scott's good record concerning umpires and umpiring and the fact Scott's demeanour and manner in approaching the umpires was not threatening or abusive.
"Under AFL Regulation 16.3, coaches, officials and players are prohibited from approaching or talking to umpires during the quarter-time, half-time or three-quarter time interval, or when the umpires are entering or leaving the arena."
Matt Thompson is a reporter for AFL Media. Follow him on Twitter @MattThompsonAFL
