Error in Standard LSMW : Maintain the conversion factor for the alternative unit PCS

Hi,

I am uploading Material Master using Standard LSMW program RMDATIND. For few hundreds of materials it is giving error as "Maintain the conversion factor for the alternative unit PCS" . I cannot understand why I am getting this error because I am not maintaining any altenate unit of measure only base unit of measure is there.

Also suppose if base unit of measure is PCS then error message is "Maintain the conversion factor for the alternative unit PCS" and if base unit of measure is M then also it gives same error message as "Maintain the conversion factor for the alternative unit PCS"

Please help urgently because I am doing Go Live and need to fixed immediately.

Thanks

Murtuza Sadriwala