Correcting Impersonated Custom Identity in SharePoint Designer

Recently, I have done a lot of work with SharePoint Designer 2013 and External Content Types (ECT).  In a previous blog, SharePoint Online to Azure SQL Database: Part 1, I covered how to work with ECTs.  Since, writing that blog, I ran into an unexpected issue that caught me by surprise.  I was adding a data source for my ECTs in a new environment and made a mistake when entering the credentials for the Secure Store Application ID.  This blog is not meant to be long or mind blowing.  It is meant to save you some time.  The following is what to do if you enter the wrong credentials for the Secure Store Application ID in SharePoint Designer 2013. What…