No, it is not possible and should not be necessary. BSID is simply an index table for BKPF/BSEG. BSEG is a cluster table, so it can't be used in JOINs or indexed. But transaction FBL5N, for example, require data to be accessed by customer account. So SAP came up with this solution that duplicates data in another, index table for easier/faster access.
Note that there are no more index tables in HANA, so this requirement doesn't make sense at all in the long term.