Only through formal connection of Facebook's business manager tools can companies share information with their own partners such as advertising agencies. Facebook will begin to show to advertisers that they need to agree to submit advertising location information and to force all users connected to the advertising account to confirm the terms.
The launch of the new consent tool confirms that in March, Facebook will crack down on customized advertising without user consent. Facebook did not vigorously enforce these rules before. The same way of API rules leads to the Cambridge Analytic scandal. A few months ago, Facebook started defending Custom Audience, when it blocked third party data middlemen like Datalogix and Acxiom to upload data sets to their advertising partners to locate Facebook users.