Mikel Arteta will "only be satisfied" if his Arsenal side are given two points back for the VAR error that allowed Brentford's equaliser to stand in Saturday's Premier League match.
Referees' body PGMOL has apologised to Arsenal after "human error" was to blame for the incorrect VAR decision.
VAR operator Lee Mason did not draw the guidelines to check for offside on Ivan Toney's equaliser.
"It wasn't human error, it was not understanding your job," said Arteta.
"That's not acceptable, I'm sorry.
"It cost Arsenal two points that are not going to be restored so we are going to have to find those two points somewhere else in the league."
Mason has not been selected for any Premier League matches this weekend.
PGMOL chief refereeing officer Howard Webb has contacted Arsenal to "acknowledge and explain the significant error" that occurred.
Arteta added, "We appreciate the apology and the explanations [from PGMOL] - they were really open. We received a lot of sympathy from our colleagues in football.
"I will only be satisfied if they give me the two points back, which will not be the case.
"They were sincere, open and genuine apologies and explanation which is really good but it doesn't change the fact we have two less points than we should have in the table."