"flagged a concern" is a correct and usable phrase in written English.
You can use it to indicate that you noticed or raised an issue or problem that needs to be addressed. For example, "The high electric bill flagged a concern about our energy usage."
Algorithmic accountability was also flagged as a concern by a UK science and technology parliamentary committee last month, in a report considering the "host of social, ethical and legal questions" that arise from growing use of autonomous technologies, and given how quickly machine learning algorithms are being deployed to wrangle insights from data-sets.
The company's safety record was also flagged as a concern when London's transport regulator withdrew Uber's license to operate in the city last September (though Uber is appealing the decision, and continues to operate there in the meanwhile).
38 48 Patient autonomy, including through informed consent, is a cornerstone of bioethics, and health law has been flagged as a concern for medical tourists.
An analysis of political advertisers running extensive campaigns on Facebook targeting users in the United States over the past six months has flagged a raft of fresh concerns about its efforts to tackle election interference — suggesting the social network's self regulation is offering little more than a sham veneer of accountability.
Battles flagged a series of ethical concerns about using social media as a data source for health research (e.g., privacy and self-disclosure; confidentiality; informed consent; what constitutes a community and who needs to give consent; trustworthiness of data; dissemination of data; use of data in knowledge translation) [ 14].
As for [the way Holmes and Balwani operated], Tyler Schultz [a former employee who later became a whistleblower] has said, for example, that he was flagging things that were wrong to Elizabeth, and after he would flag a concern, she would react with a non-response.
A colleague at Cambridge said Regeni had not flagged any concerns about his safety.
Critics of the strategy have flagged security as a concern, pointing out that people may do things with their own equipment they wouldn't consider with a company laptop.
It went on to produce two annual reports — flagging a number of issues of concern, including, most recently, warning that Google might be able to exert monopoly power as a result of the fact Streams is being contractually bundled with streaming and data access infrastructure.
