The British broadcaster was found to have committed a "serious breach" of industry standards by omitting to mention that the presenter of a documentary about the Gaza situation was the son of a Hamas official, according to UK media regulator Ofcom.
An inquiry by Ofcom into the documentary titled Gaza: How to Survive a Warzone has determined that the film was "substantially inaccurate".
The chief executive of the broadcaster had previously apologised, stating there had been "a significant failing in relation to accuracy".
The authority has directed the corporation to air a evening announcement about its findings.
"Given this constitutes a significant violation of our rules, we are ordering the BBC to air a message of our conclusions against it on BBC Two at 9pm, with a date to be finalised," the regulator stated.
'Potential to Undermine Credibility'
The authority's statement declared: "Our probe determined that the film's failure to disclose that the voice's father occupied a role in the Hamas-administered administration was materially misleading.
"This implied that the viewers did not have critical information which may have been very significant to their evaluation of the voice and the information he provided.
"Confidence is at the heart of the bond between a broadcaster and its audience, especially for a state-funded media outlet such as the BBC.
"This failing had the risk to erode the very considerable amounts of trust that audiences would have put in a BBC factual programme about the Gaza conflict."
The film was pulled from iPlayer in last February after the presenter's family links came to light, and in this past July an internal BBC review concluded it violated the corporation's editorial guidelines on truthfulness.
A corporation official said: "The authority's determination is in accordance with the results of the internal assessment, that there was a significant failing in the programme in relation to the BBC's Editorial Guidelines on accuracy, which reflects Rule 2.2 of the authority's broadcasting regulations.
"We issued an apology for this and we comply with the regulator's ruling in complete. We will adhere to the penalty as soon as the schedule and language are determined."
