SharePoint Integration with other Platforms

Hi,

I am trying to do a POC on SharePoint Online Remote Authentication as explained in the below article:

http://paulryan.com.au/2014/spo-remote-authentication-rest/

When I try to get the security token I am getting the “Direct login to WLID is not allowed for this federated namespace” error from my corporate SharePoint Online Tenant but I am able to get the security token from my MSDN Development Tenant.

Note sure if we need to enable anything in Azure side. Basically I am trying to do a POC to explain how SharePoint REST APIs can be opened to integrate with other technologies we use internally like JAVA, Informatica, Salesforce, etc.,

Any suggestions?