You must be the admin user to edit the authentication information for an external vendor source.
The user name and password you specify are not verified with the external vendor source. So, ensure that you supply the correct information or jobs that attempt to access the external vendor source will fail.
Choose Authentication from the Tools menu.
The Authentication window opens.
Select the vendor source that needs its information updated, and click Edit.
The Authentication Editor window opens.
Type the user name associated with the selected vendor source in the Username field.
Type the password in the Password field.
Type the password again in the Verify Password field.
Click OK.
The Authentication Editor window closes.
The updated authentication information appears in the Authentication window.