Hi Satish,
Seems like your BW info object may be have compound info object. when we have compound info object in bw side we get data like XXXX/YY. in this case when we load master data into BPC side, in transformations we need to use mappings as
ID = <Technical name of YY>+ ID.
For example: in GL Account We use compound object, i.e 0CHRT_ACCTS
So when we load data into BPC, in master data loading time, mappings used as
ID= 0CHRT_ACCTS+ID.
Please share bw info object structure and BPC Dimension structure.
Thanks