https://userapps.support.sap.com/sap/support/knowledge/en/2284578
2284578 - Managing the different license keys when downgrading from SAP BI 4.2 SP02+ back to BI 4.x...
After upgrading to SAP BI Platform 4.2, SP02 or newer, a new license key was required Should you need to revert back to the previous version of SAP BI 4.x, the...