SAP ML Alternative valuation run (Run time error)

Hi

our client implemented Actual costing 5 years back.

Now my client want to run Alternative valuation run; Transaction code: CKMLCPAVR.

System is through is run time error message

in the Transaction code CKMLCPAVR ENTER costing run; last day of period;

Period data: first day of period

plant Assignment: selected the plant

Setting: Posting run.

when saved, system is showing run time error message.

message x001 (ckmlrun) with CKML_RUN_ADMIN_CHANGE

System is trying find value in the table CKMLRUNPERIOD.

please let me know what I am missing.

Thanks
adams