FI and PCA are out of balance

Hi Experts,

We have following scenario:

System ECC 6.0

New GL not implemented

Reconciliation ledger activated

Client is using Tcode KALC for reconcilation posting. Wherein two GL accounts (706000 - FI/CO recon & 803000

-General and Administrative Allocation) are impacted for several company codes.

The issue:

On FI side value is triggered for above 2 GL accounts, However on PCA side value is not triggered. Thus there is a difference between FI value & PCA value.

I could see in OK17 GL 706000 is assigned for automatic posting..However, no set up is done in 3KEH & KEDO... Does this have some kind of posting when KALC is used?Would like to know what would be the cause of above variance? Should i look into reconcilation ledger customization?

Help is appreciated.

Sundar