SAP License key after system copy in ECC 6.0

License key after system copy in ECC 6.0

After system copy, there is a temporary license. To  get back the old system number you
 must first delete all old licenses in tcode SAPLICENSE, then, request a new license at http://service.sap.com/licensekey
then, choose the proper system,  under "technical installation" section. An then reinstall licenses via saplikey or SAPLICENCSE .