Fixed assets write offf

We need to write off a few Fixed Asset amounts due to rounding calculations. The fixed assets have been fully depreciated but we still have the following balances in the GL for these accounts. They are:

1000033 (0.47) cents

1050025 (0.54) cents

1050033 0.64 cents

1050041 0.33 cents

1000063 0.23 cents

1050063 0.62 cents

We tried to manually write them off but the system gives me the following error message "Account 1XXXXXX in Co. code 10XX cannot be directly posted to". We need to clean these balances but we don't know how it can be done. Can we change the setup in the journal entries in order to manually post the transactions and then block the direct postings again once the entries are done. Please advice.

Thanks

Madhu