Tw,
What is the error that you are getting? By the way, what is the reason that you are trying to populate both IO and Cost center in the asset posting? Note that cost center would then become a statistical posting.
Please let us know the exact error - Screen shot and error code.
Also, in the meantime, please check that ASCET should show an entry for posting areas like below:
Area01: Instead of EAUFN you'll need CAUFN
For any parallel area for which you only post depreciation, maintain only depreciation entries for CUAFN and KOSTL. No need to maintain APC postings
For any delta area, maintain APC postings for both CAUFN and KOSTL. No need to maintain depreciation posting.
Also make sure that your Field Status groups for asset and accl dep recon accounts should have cost center and IO as optional field.
Lastly, make sure that the asset accounts are maintained as Cost element category 90.
If you did not have these setting before you posted values to the assets, you may be re-post values on the assets, but I am not sure on that part.
If you still get errors, please make sure to attach the error together with error code. Let us know if it worked.
Thanks
Asheesh Bhatia