Extract structure

Hi,

I generated a extract structure for a table and it created many ledgers, L0 local direct posting ledger

LR local rollup ledger

Z1, Z2, ZA,ZB,ZD,ZE,ZF,ZI,ZN,ZS,ZT and ZU ledegers.

now i need to assign totals record- datasource for which ledger should i assign?

Help,

Thankyou.