The BBC committed a "major breach" of industry standards by omitting to mention that the presenter of a documentary about the Gaza conflict was the offspring of a Hamas administrator, as ruled by regulatory body Ofcom.
An investigation by Ofcom into the documentary titled Gaza: How to Survive a Warzone has concluded that the documentary was "significantly deceptive".
The head of the BBC had already issued an apology, stating there had been "a major oversight in relation to truthfulness".
Ofcom has ordered the corporation to air a peak-time announcement about its conclusions.
"Given this constitutes a major infringement of our code, we are directing the corporation to broadcast a message of our conclusions against it on BBC Two at 21:00, with a timing to be confirmed," it said.
'Potential to Damage Trust'
The regulator's statement declared: "Our investigation determined that the documentary's failure to disclose that the voice's father occupied a post in the Hamas-administered authority was substantially inaccurate.
"This implied that the public did not have critical information which may have been highly relevant to their judgment of the voice and the details he provided.
"Trust is at the heart of the relationship between a broadcaster and its public, particularly for a public service broadcaster such as the public broadcaster.
"This failing had the risk to erode the very considerable amounts of trust that the public would have invested in a BBC factual programme about the Israel-Gaza war."
The film was pulled from iPlayer in the month of February after the presenter's familial connections emerged, and in the month of July an corporation's own inquiry determined it infringed the organization's editorial guidelines on truthfulness.
A corporation official stated: "The authority's determination is in accordance with the conclusions of Peter Johnston's review, that there was a significant failing in the programme in relation to the corporation's content standards on truthfulness, which corresponds to Rule 2.2 of the regulator's media standards.
"We expressed regret for this and we agree with the authority's determination in its entirety. We will adhere to the penalty as soon as the timing and wording are finalised."
