Asset Upload Problem in AS91

Dear Experts,

    My fiscal is starting from 1st February , current year and ending with 31 January next year.

As per the requirement I want to upload as on 28.02.2015. ( Mid of the year ).

So in configuration setting I mentioned the transfer date as 28.02.2015 and close the first period in OAYC.

Problem : while uploading the data then through T code AS91, I can see the grey  colour in Acquisition and accumulated depreciation tab  and below information message I am getting.

So I can not put the data in respective field.

Regards,

David