Wrong Auc Settled and depreciation need to be corrected

Hi,

Issue is our end user created asset called A with 15000 in June 2008.

Based on that 2 months depreciation was posted properly.

After that one wrong Auc was settled to this asset with the amount of 10000. (T Code : AIAB)

So after that based on this amount system calculated depreciation.

Today only we got identified that error.

Now we need to the correct the all the wrong postings.

Please guide me the full process to rectify with T codes.

Sateesh