APIError: There were no sales for the date specified. Any way to get Units sold for a free app?

[rolflocher]

Our app is free so there is no sales - $ sales data, but there is sales - # units data which I am interested in. I am having trouble getting the download_sales_and_trends_reports to return anything because of this. Also, perhaps the script shouldn't crash when there is a day without sales?

I ended up ditching the manual jwt encoding to try your wrapper because I couldn't set the authorization header with String("Bearer ") + Bytes(encoded_jwt). Perhaps you could help me? Thanks

[ppawlak]

Thank you for reporting this issue.
I'll try to have a look at it as soon as possible.

[ppawlak]

@rolflocher I tried on my account and I am able to download reports even on days with no sales.

Here is the example call I do
api.download_sales_and_trends_reports(filters={'vendorNumber': 'XXXXXX', 'frequency': 'DAILY', 'reportDate': '2020-03-18'}, save_to='report.csv')

Can you paste the call you are doing and the python traceback you get?

[rolflocher]

api.download_sales_and_trends_reports(filters={'vendorNumber': '99999999', 'frequency': 'DAILY', 'reportDate': '2020-04-10'}, save_to='report.csv')
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/appstoreconnect/api.py", line 407, in download_sales_and_trends_reports
    response = self._api_call(url)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/appstoreconnect/api.py", line 134, in _api_call
    raise APIError(payload.get('errors', [])[0].get('detail', 'Unknown error'))
appstoreconnect.api.APIError: There were no sales for the date specified.

But that is for last month, when I change the date to this month it works fine.

[ppawlak]

But that is for last month, when I change the date to this month it works fine.

Well, then I think it means that you had no downloads on 2020-04-10.

Also, perhaps the script shouldn't crash when there is a day without sales?

You should call the API in a try / except block like this:

from appstoreconnect.api import APIError

try:
    api.download_sales_and_trends_reports(filters={'vendorNumber': '99999999', 'frequency': 'DAILY', 'reportDate': '2020-04-10'}, save_to='report.csv')
except APIError as e:
    print("Could not download report because: ", e)

I am also closing this issue as raising an exception on errors is the desired behavior.
Let me know if you need more help though.