SP Online WCF External Content Types using SP Designer 2013

Question

To create External Content Types in SharePoint Online, i have created a WCF service and hosted it in IIS and it is working fine as shown below.

Now, I tried to create External Content types using SharePoint Designer 2013.

But, i'm facing this issue.

Web.config file

Please kindly someone help me on this.

Answer 1

Please make sure you have enable Publish Metadata for the WCF service. You can check the articles about how to Publish Metadata for a Service using a Configuration File.

WCF Tutorial - Introduction

If the issue exists, try to add the hostname of address to hosts file and check again.