Errors Occurs when fixed asset post

Hi all,
We are posting a fixed assets through the fixed asset journal . At the time of posting we get an error “Can not picked such quantity (e.g. 01 quantity) from this ‘warehouse’ it contains 0 quantity”.
For example: Open ‘Form/LedgerJournalTable’ & create ledger & then click on ‘Lines’ menuitem button. Form/LedgerJournalTrans displayed. Create the record like Date: 5/1/2012, Transaction Type: Acquisition, Account (Fixed Asset No.): 0001, Debit: Rs. 100. Click ‘Validate’ menu button & get “Journal is OK” after that click on ‘Post’ menu button and get an error which is mentioned above.
Looking forward for solution of this issue.
Thanks & Regards
Vimal