Access denied for user on port 5555 -> 'soap/rpc

I’m seeing a really peculiar situation here.

I am trying to insert data into the DB through portlet page that was created with designer 7.1.2 and the below error is thrown on the IS server log

“Access denied for user on port 5555 -> ‘soap/rpc’”

I found a couple of knowledgebase articles on WM Advantage, indicating certain solutions such as creating JDBC pool alias table and changing the URL of extended settings which did not work.

Appreciate your quick response.