Use the InCost upload method to report cost.  

API requests must comply with the following: 

• One app per API call. 
• Data format is JSON as depicted in the Curl example.
• Each JSON contains the campaign cost details for a specified date.
• Mandatory fields must be populated. Meaning, don't send empty fields. 
• Media source is restricted to media sources associated (registered under) your ad network account. Get the list from your partner development manager.
• If there are fields that are not part of your campaign cost reporting hierarchy, don’t include them in your request. For example, adset ID, asset name, ad ID, ad name.

Cost fields in the JSON

curl --location --request POST 'https://hq1.appsflyer.com/api/incost-uploader/v1/data/app/' \
--header 'Content-Type: application/json' \
--header 'Authorization: Bearer ' \
--data-raw
      '[{
    "date": "2020-02-28",
    "app_id": "com.cost.app",
    "media_source": "example_int",
    "campaign_id": "1236678",
    "campaign_name": "example_campaign",
    "geo": "ZA",
    "currency": "ZAR",
    "spend": 123.12
  },
  {
    "date": "2020-02-29",
    "app_id": "com.cost.app",
    "media_source": "exmaple_int",
    "campaign_id": "123",
    "campaign_name": "Campaign123",
    "geo": "IL",
    "currency": "USD",
    //make sure the value for "spend" does NOT have quotation marks, as indicated below.
    "spend": 2400 
  }]'

The method returns the status/error message of a previously submitted send cost data call in a JSON.

Job-status

curl --location --request GET 'https://hq1.appsflyer.com/api/incost-jobstatus/v1/data/app/<app_id_placeholder>/job/<job_id placeholder>' \
--header 'Content-Type: application/json' \
--header 'Authorization: Bearer '<api_token_placeholder. Note the token has more than 700 characters.>'

get job status responses examples

{ 
    "date_from": "2020-02-21",
    "date_to": "2020-02-28",    
    "matched_records_percentage" : 85,
    "app_id": "com.cost.app",
    "status": "Applied",
    "Uploaded request url": "https://domain/file.json"
}

{ 
      "id": "com.cost.app",

      "status": "Failed",

      "Uploaded request url": "https://domain/file2.json",

      "error" : [ {

      "af_error_code": “ic211”,

       "error_message" : "Incorrect date format. Use the format yyyy-mm-dd."

}

The following apps are available in your dashboard for testing:

• Android: com.cost.app
• iOS: id888123456

To test cost integration:

1. [Optional] End-to-end-attribution test:
   1. Prepare attribution links for the test applications using the attribution-link template configured for your integration. 
   2. Generate attribution traffic for clicks, including campaign, adset, ad ID so that the cost data can match with the click data.
   3. Generate a click for the test applications, using the attribution-link template configured in your integration. Make sure to populate macros, as if this was real traffic.
2. [Mandatory] Basic cost integration:
   1. Prepare test data.
   2. Submit the data, use InCost uploader.
   3. Record the job ID that returns.
   4. Wait 2 minutes.
   5. Verify that no errors were found. Use get job status.
      Note: Because there is no attribution traffic (clicks), the matched row score will be less than 100. 
   6. If errors are found, make corrections, and submit again.
   7. Cost data will display in the dashboard within 5 hours, verify that the data is correct.

The following error codes and message return.

• Advertisers enable Get Cost Data in the AppsFlyer dashboard using the procedure that follows. 
• The advertiser must enable get cost data for each app individually. Verify that you are enabled by using get InCost enabled app list API.

To enable get cost data from the ad network: 

1. In AppsFlyer, go to Integration > Active Integrations.
2. Select the integrated partner (ad network name in AppsFlyer).
3. Go to Cost tab.
   

   

4. Enable Get Cost Data.
   AppsFlyer is permitted to record cost data from the partner. 
   For the avoidance of doubt, don't give your API token to the ad network. They don't need it.