You are executing an upgrade from SAP Enterprise 4.70 or SAP ECC 5.00 to SAP ECC 6.00 or higher.
1265111 (or the corresponding Support Package) is already in your system.
Before the upgrade, you started payroll in a productive system.
If 1265111 is not yet in your system, you should implement it at the same time as the corrections from this note (or the listed Support Package). As long as no productive payroll was started yet, you can skip the conversion of the cluster data.
For 2) You must implement this report to prevent the runtime error and to ensure that you only have to convert the smallest volume of data possible. We deliver the report as XPRA with Support Packages SAPK-47095INSAPHRRXX and SAPK-50061INSAPHRRXX.