PDC was trying to move the cell monarchs on each of the non-core cells into the Dispatcher, but in order to do that, the PD monarch needs to be able to read the CPU number of the cell monarch on each of the non-core cells, which is kept in a data structure on each of the cells. PDC was unable to get the address to the CELL_CPU_STATE structure in PDH memory in a cell in the partition. The data field is the error return status from the PDC function called PdhGetHCellStructAddr().