Big Business can report Deprecated Calls for the Shopify API you are currently using. Just click the Report button in Shopify Setup and the Paste the result into an email and we can help you update to a more current API version, if needed.
To report Deprecated Calls to the Shopify API:
1. Go to Company card, Prefs, Shopify Setup
2. Click the Report button and enter your API version
3. OK the Copied! dialog and Paste into an email