BSEG table not updating Asset number in (ALNL1)

Hi Experts,

My client wants the value posted in currency translation GL based on individual asset number.

When I checked it in BSEG I come to know that asset number field in the BSEG is not field.

When I tried to execute FAGLL03 also for currency translation GL ,definitely it will not be there as it is not in BSEG.( I have attached a excel file with example)

So my question is how to get asset value in BSEG-ALNL1 field for currency translation GL??

Your help will be highly appreciated.

Thanks,

Rashmi Ranjan Sau