License Key For SAP R/3 Enterprise Demo Version

Hello Basis Gurus,

I have installed SAP R/3 Enterprise Demo Version in my Notebook.

When i am trying to login using User ID: SAPUSER getting an error message that ":Logon refused (valid license not installed)"

SAP R/3 Details:

Component Version: SAP R/3 Enterprise

Installation Number: INITIAL

License expiration: . .----

Active Hardware Key: C1129820057

System Number: System No. Empty

When i am trying to install the License Key at Command Prompt getting the error message that

Specify your license key:

LICENSE_KEY 1...5....0....5....0...4

LICENSE_KEY =

• Wrong license data specified

> Check the specified license data for:

> - typing errors

> - upper / lower characters

> - same values as noted on license fax

How can i get the correct LICENSE_KEY for this demo version for the above hard ware key.

Please advice urgently..