Facebook Marketing API : Sharing Custom Audiences - facebook

Question

I'm trying to create, add users, remove users to custom audiences and then share those audiences with other accounts. I have gotten all of these working except for the sharing part.
The api docs seem very vague on how to actually do this. Here is what it says:
Share your custom audience with business objects at
'/custom-audience/share_with_objects'
Does anyone know how to do this through the API? I imagine you'd need the AD_ACCOUNT_ID and the CUSTOM_AUDIENCE_ID in some capacity.
for reference that quoted line above is from here https://developers.facebook.com/docs/marketing-api/audiences-api
under the header Building a Custom Audience
Thanks for the help.

Answer 1

I am not entirely sure what you want to do but the documentation says how you can Create and Share a custom audience with other advertiser accounts.Reference here. You have to POST on this endpoint /{custom_audience_id}/adaccounts and specify the owner ad account and the recipient ad account. Please, check the documentation for more information. Hope this helped.

Answer 2

As of 2018; Custom Audiences can now be shared only between Businesses (it is mandatory for both parties to have BusinessManager)
How to Share Custom Audience Lists
Both entities must have a Business Manager
Share Custom Audiences between Business Managers
Since 2018, in order to share a Custom Audience between Business
Managers, such businesses should establish an audience sharing
relationship as follows. You need Business Manager admin permission to
request a relationship to share an audience. If two Business Managers
have already established the relationship, then an advertiser can
directly share the audience with the other business. See also
Reference, Custom Audience and Reference, Custom Audience Shared
Account Info.
And while marketing-api docs have improved a bit, but still completely lack the get-started-in-5-min crispness
To create a relationship, make this call, to a specific custom_audience_id:
POST https://graph.facebook.com/v7.0/{custom_audience_id}/adaccounts?adaccounts=[<ad_account_id>]&relationship_type=[<relationship_type>]
and while nowhere they've specified what is this relationship_type, I peeked into their java-business-sdk and found this
public static enum EnumRelationshipType {
#SerializedName("AD_MANAGER")
VALUE_AD_MANAGER("AD_MANAGER"),
#SerializedName("AGENCY")
VALUE_AGENCY("AGENCY"),
#SerializedName("AGGREGATOR")
VALUE_AGGREGATOR("AGGREGATOR"),
#SerializedName("AUDIENCE_MANAGER")
VALUE_AUDIENCE_MANAGER("AUDIENCE_MANAGER"),
#SerializedName("OTHER")
VALUE_OTHER("OTHER"),
;
..