The British broadcaster was found to have committed a "serious breach" of media regulations by omitting to mention that the voice of a programme about Gaza was the son of a Hamas official, as ruled by regulatory body Ofcom.
An inquiry by the broadcasting watchdog into the programme Gaza: How to Survive a Warzone has concluded that the programme was "significantly deceptive".
The head of the BBC had earlier expressed regret, stating there had been "a significant failing in relation to truthfulness".
The regulator has instructed the corporation to air a evening announcement about its conclusions.
"As this represents a major infringement of our rules, we are ordering the BBC to air a statement of our findings against it on BBC Two at 21:00, with a timing to be finalised," it said.
'Risk to Undermine Confidence'
The authority's announcement said: "Our investigation determined that the programme's omission to reveal that the presenter's parent served in a position in the Hamas-administered administration was significantly deceptive.
"Consequently that the audience did not have essential details which may have been extremely pertinent to their evaluation of the narrator and the information he presented.
"Trust is at the center of the bond between a media organization and its public, especially for a public service broadcaster such as the British Broadcasting Corporation.
"This error had the risk to erode the very considerable amounts of credibility that audiences would have invested in a documentary produced by the BBC about the Israel-Gaza war."
The programme was removed from the BBC's streaming service in the month of February after the boy's personal associations were revealed, and in the month of July an internal BBC review found it violated the organization's journalistic standards on factual correctness.
A BBC spokesperson stated: "The Ofcom ruling is in accordance with the conclusions of the corporation's inquiry, that there was a major oversight in the film in relation to the corporation's content standards on factual correctness, which reflects clause 2.2 of the regulator's media standards.
"We have apologised for this and we comply with Ofcom's decision in its entirety. We will comply with the sanction as soon as the timing and language are finalised."
