SAP Adapter failing to log in to SAP

I have a very simple BizTalk 2006 R2 app that I will use to send and receive files to an SAP instance on a different server.  I have installed the SAP adapter properly and configured send and receive ports in my BizTalk application from the BizTalk Server Administrator.

However, when I go to add these adapters into my .NET project (“Add->Add Generated Items->Add Adapter Metadata) I consistently get a “Name or Password Incorrect (repeat logon)” error.  I know that the username is correct because the account on SAP gets locked out from too many failures.  However, I can logon to the SAP instance using the same username/password combination I have entered into the BizTalk attributes, so I also know that the password is correct.

I am at a loss to know where my error lies.  It is obvious that BizTalk is able to connect to my username account on the SAP instance, but somehow cannot enter the correct password.  I have checked and rechecked spelling and case.

Assistance is greatly appreciated.

Thanks.