I have a PHP application doing adds/updates from a list using the XML/RPC API; it works for a few entries but then crashes with a 500 error. It is usually less than 50 records when the problem starts, and there are only 3 API calls for each item (search by field, add or update, optin) so it can’t be reaching the throttling limit. But just to be sure, I added a 5-second pause between items to allow the limit to reset…it didn’t help.
All suggestions are greatly appreciated. Thanks.