nabin,
"Iam trying to post a Journal Entry to reduce the depreciation charged against the asset by posting"
- You are posting journal entry, this means that you want to adjust the GL as the posting is not correct. So I guess the asset values are correct but not matching in the GL accounts that is why you are posting journal entry?
"But manual entry is not affecting the asset net value which should be increased after posting this journal entry"
- Manual entry only affects the ledger and not the asset. If you want your posting refelect as well in the asset, post an asset transaction.
You need to clarify the problem:
1. Why are you posting entries on GL?
2. Are you posting entries on GL only or both GL and asset?
3. Are GL and asset balances tally?
4. Is your asset balance correct?
Thanks!
Jhero