Authenticate sap bydesign api url

My company recently changed to an SSO login for SAP by design. I was connecting to the ODATA URL using a basic connection with my old credentials. When I try and connect using the Organisational Account, I get this error.

The WWW-Authenticate header doesn't contain a valid authorization URI. Header value: 'Basic realm="SAP NetWeaver Application Server"'.

Do I need to build the Header value above into the existing URL? If yes, how?