Add Header elements for authentication

Hi All,

I need to add Basic Authentication on HTTP Header to logon to SAP Cloud Application. the Document shared by SAP has below.

Header:

Authorization

Possible Value:

Basic <authorization>

Description:

The authentication type and the base64-encoded value of the username and password pair:<username>:<password>

I am trying to send SOAP Request to SAP System through SOAP UI but getting below error

 <faultString>Authentication credentials were not provided. Provide the user name, password, and domain in the HTTP header.</faultString>

   <soapenv:Header>

   <Authorization>

   <basic>Pasword ke pair</basic>

   </Authorization>

      </soapenv:Header>

the above parameter setup is not working