RSAR890 error when transfer factory calendar from ERP to APO

Hi,

           I got the error message RSAR890 when trying to sync up factory calendar from ERP through RSA1 in APO. I also checked OSS note 630963 but didn't seem to be applicable since my PI_BASIS components for both source system (ERP) and destination system (APO) are in 740 version. The connection doesn't seem to be a problem since I could do other update functions (currency, unit of measures, and Fiscal year variant).  Also, I check our BW system which could update factory calendar from the same ERP source and it seems to work fine. Any idea on what went wrong on the setting on my APO side ?

Thanks,

Paranee