Hi,
Go to T-code SCAL and select Radio button Public Holidays to create Public Holidays , while creatiing Public holidays it will not ask for Transport request you have forcefully create it.
After creation of Public holidays in T-code SCAL select Radio button to create Holiday calendar then Trasnport .
Map the Holidays claendar to relavant PSA
Then generate Work schedule rules from PH_SHF00
Regards,
Raja Sekhar