Error in RSA3

Hi friends,

While testing the extraction of a hierarchy data source (0CMMT_ITEM_FMCI_PU_HIER) from RSA3, I encountered error.

Error : Error 6 in function module RSS_PROGRAM_GENERATE

Message no. RJ028

I looked into some notes and it was not of much help for me. Please let me know if someone have come across this error and know the solution.

Regards

Ram