Missing mobile_conversion_installs - sometimes


#1

While collecting cost and install data, sometimes the mobile_conversion_installs field isn’t returned. Even though I’m asking for it, even it most of the time it is returned.

Any idea why?

Here are two near identical queries
The first that returns a subset of the fields I’m expecting,
the second returning all the expected fields:

Missing mobile_conversion_installs:
https://ads-api.twitter.com/0/stats/accounts/18ce53wsium/promoted_tweets?promoted_tweet_ids=70ud2,70udp&granularity=HOUR&metrics=billed_charge_local_micro,promoted_tweet_timeline_impressions,promoted_tweet_search_impressions,promoted_tweet_app_install_attempts,mobile_conversion_installs&start_time=2015-04-28&end_time=2015-04-29

{
	"data_type" : "stats",
	"data" : [{
			"start_time" : "2015-04-28T05:00:00Z",
			"billed_charge_local_micro" : [4870000, 2810000, 5190000, 0, 2390000, 5430000, 2370000, 2890000, 3000000, 9150000, 6880000, 7410000, 2390000, 2340000, 16970000, 2880000, 0, 5490000, 0, 0, 0, 0, 0, 0],
			"end_time" : "2015-04-29T05:00:00Z",
			"id" : "70udp",
			"promoted_tweet_timeline_impressions" : [1628, 835, 308, 102, 461, 793, 670, 1268, 1005, 1362, 1242, 1033, 654, 754, 2087, 733, 364, 154, 0, 0, 0, 0, 0, 0],
			"granularity" : "HOUR",
			"promoted_tweet_app_install_attempts" : [3, 1, 2, 0, 1, 2, 1, 1, 1, 5, 3, 3, 1, 1, 7, 1, 0, 3, 0, 0, 0, 0, 0, 0],
			"promoted_tweet_search_impressions" : [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
		}, {
			"start_time" : "2015-04-28T05:00:00Z",
			"billed_charge_local_micro" : [8680000, 0, 5150000, 0, 4870000, 7600000, 7380000, 15040000, 2890000, 0, 2450000, 3820000, 10980000, 10800000, 2800000, 0, 0, 0, 0, 0, 0, 0, 0, 0],
			"end_time" : "2015-04-29T05:00:00Z",
			"id" : "70ud2",
			"promoted_tweet_timeline_impressions" : [557, 264, 204, 191, 538, 712, 546, 1001, 800, 762, 569, 699, 1195, 885, 383, 0, 0, 0, 0, 0, 0, 0, 0, 0],
			"granularity" : "HOUR",
			"promoted_tweet_app_install_attempts" : [4, 0, 2, 0, 2, 3, 3, 7, 1, 0, 1, 3, 4, 4, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0],
			"promoted_tweet_search_impressions" : [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
		}
	],
	"request" : {
		"params" : {
			"start_time" : "2015-04-28T05:00:00Z",
			"end_time" : "2015-04-29T05:00:00Z",
			"account_id" : "18ce53wsium",
			"granularity" : "HOUR",
			"metrics" : ["billed_charge_local_micro", "promoted_tweet_timeline_impressions", "promoted_tweet_search_impressions", "promoted_tweet_app_install_attempts", "mobile_conversion_installs"],
			"promoted_tweet_ids" : ["70ud2", "70udp"]
		}
	}
}

Has mobile_conversion_installs:
https://ads-api.twitter.com/0/stats/accounts/18ce53xfdx2/promoted_tweets?promoted_tweet_ids=69vjv,6ae9a&granularity=HOUR&metrics=billed_charge_local_micro,promoted_tweet_timeline_impressions,promoted_tweet_search_impressions,promoted_tweet_app_install_attempts,mobile_conversion_installs&start_time=2015-04-28&end_time=2015-04-29

{
	"data_type" : "stats",
	"data" : [{
			"mobile_conversion_installs" : [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
			"start_time" : "2015-04-28T04:00:00Z",
			"billed_charge_local_micro" : [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
			"end_time" : "2015-04-29T04:00:00Z",
			"id" : "6ae9a",
			"promoted_tweet_timeline_impressions" : [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
			"mobile_conversion_installs_breakdown" : {
				"total" : [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
				"post_view" : [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
				"post_engagement" : [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
				"assisted" : [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
			},
			"granularity" : "HOUR",
			"promoted_tweet_app_install_attempts" : [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
			"promoted_tweet_search_impressions" : [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
		}, {
			"mobile_conversion_installs" : [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
			"start_time" : "2015-04-28T04:00:00Z",
			"billed_charge_local_micro" : [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
			"end_time" : "2015-04-29T04:00:00Z",
			"id" : "69vjv",
			"promoted_tweet_timeline_impressions" : [4, 12, 6, 2, 0, 0, 1, 3, 17, 0, 6, 13, 14, 5, 1, 12, 4, 3, 14, 2, 4, 4, 19, 12],
			"mobile_conversion_installs_breakdown" : {
				"total" : [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
				"post_view" : [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
				"post_engagement" : [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
				"assisted" : [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
			},
			"granularity" : "HOUR",
			"promoted_tweet_app_install_attempts" : [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
			"promoted_tweet_search_impressions" : [3, 2, 3, 1, 0, 0, 0, 0, 0, 0, 3, 0, 0, 1, 2, 12, 2, 4, 1, 0, 0, 0, 0, 0]
		}
	],
	"request" : {
		"params" : {
			"start_time" : "2015-04-28T04:00:00Z",
			"end_time" : "2015-04-29T04:00:00Z",
			"account_id" : "18ce53xfdx2",
			"granularity" : "HOUR",
			"metrics" : ["billed_charge_local_micro", "promoted_tweet_timeline_impressions", "promoted_tweet_search_impressions", "promoted_tweet_app_install_attempts", "mobile_conversion_installs"],
			"promoted_tweet_ids" : ["69vjv", "6ae9a"]
		}
	}
}

Asynchronous Segmented Stats missing mobile_conversion_installs