The public service broadcaster committed a "serious breach" of media regulations by omitting to mention that the narrator of a documentary about the Gaza situation was the child of a Hamas representative, according to UK media regulator Ofcom.
An inquiry by Ofcom into Gaza: How to Survive a Warzone has found that the documentary was "substantially inaccurate".
The chief executive of the broadcaster had earlier expressed regret, noting there had been "a serious error in relation to truthfulness".
Ofcom has directed the corporation to transmit a evening announcement about its decisions.
"Given this constitutes a serious breach of our rules, we are ordering the corporation to transmit a statement of our findings against it on the BBC's second channel at nine o'clock in the evening, with a date to be confirmed," the statement read.
'Potential to Damage Credibility'
The watchdog's report stated: "Our investigation found that the programme's omission to reveal that the voice's father served in a position in the Hamas-controlled administration was substantially inaccurate.
"It meant that the public did not have vital facts which may have been very significant to their assessment of the narrator and the information he presented.
"Credibility is at the center of the relationship between a broadcaster and its viewers, particularly for a national broadcasting corporation such as the BBC.
"This error had the risk to damage the exceptionally strong amounts of trust that the public would have placed in a documentary produced by the BBC about the Gaza conflict."
The film was pulled from the BBC's streaming service in the month of February after the narrator's personal associations came to light, and in July an corporation's own inquiry determined it breached the broadcaster's content policies on truthfulness.
A representative for the broadcaster commented: "The Ofcom ruling is in agreement with the findings of the internal assessment, that there was a significant failing in the film in relation to the BBC's Editorial Guidelines on accuracy, which corresponds to regulation 2.2 of the authority's broadcasting regulations.
"We expressed regret for this and we comply with the authority's determination in complete. We will follow the directive as soon as the timing and wording are determined."
