Mae Rhif y Daliad (CPH) yn bwysig gan mai dyma sail nifer o’r systemau rheoli da byw a ddefnyddir i adnabod daliadau fferm. Felly, mae’n hanfodol ar gyfer adnabod ac olrhain lleoliad gwartheg, defaid, geifr a moch, fel sy’n ofynnol gan  Reoliadau Ewropeaidd.
The County Parish Holding (CPH) reference number is important as it underpins a number of livestock control systems used to identify farmed holdings and therefore it is fundamental in identifying and tracing the location of cattle, sheep, goats and pigs as required by European Regulation.