Outbound HTTP calls blocked in Business Central Sandbox – Kauffmann @ Dynamics 365 Business Central

Recently I received a number of questions from people who were using the first self-monetization example code I created about a year ago. They received an error message when installing the app: Callback functions are not allowed.

This error happened because there is code in the install codeunit to do an outgoing HTTP call to a webservice. In the same period,…