The BBC was found to have committed a "serious breach" of industry standards by omitting to mention that the narrator of a film about the Gaza situation was the offspring of a Hamas official, as determined by UK media regulator Ofcom.
An investigation by Ofcom into Gaza: How to Survive a Warzone has found that the programme was "materially misleading".
The chief executive of the broadcaster had earlier expressed regret, stating there had been "a major oversight in relation to factual correctness".
The authority has directed the broadcaster to air a prime-time statement about its conclusions.
"Given this constitutes a significant violation of our rules, we are ordering the BBC to air a announcement of our conclusions against it on BBC Two at 21:00, with a date to be confirmed," the statement read.
'Possibility to Undermine Credibility'
The authority's statement said: "The inquiry we conducted concluded that the documentary's omission to reveal that the presenter's parent held a role in the Hamas-controlled authority was substantially inaccurate.
"This implied that the audience did not have vital facts which may have been highly relevant to their assessment of the presenter and the content he presented.
"Credibility is at the center of the relationship between a broadcaster and its audience, particularly for a state-funded media outlet such as the public broadcaster.
"This failing had the possibility to undermine the very considerable levels of credibility that viewers would have placed in a BBC factual programme about the conflict in Gaza."
The programme was removed from the BBC's streaming service in last February after the boy's personal associations were revealed, and in July an corporation's own inquiry found it violated the broadcaster's editorial guidelines on truthfulness.
A representative for the broadcaster commented: "The regulator's decision is in accordance with the results of Peter Johnston's review, that there was a significant failing in the film in relation to the broadcaster's journalistic policies on factual correctness, which reflects clause 2.2 of the regulator's media standards.
"We issued an apology for this and we accept Ofcom's decision in complete. We will comply with the sanction as soon as the timing and language are confirmed."
