Subledger Period Close Exception Report Journal source Assets having status Invalid

when checking the asset found that there was an accounting event for transfers which was in error due to code combination disabled this is for the month of MAR-2014 and the depreciation period is closed.need to know is this a functionality that though there are invalid events still period deprection period is closed?

now in the month of may2014 we identified this issue and found a note 1447828.1 but now the solution provided is not feasible to customer and customer wants to know when there are invalid events how can the deprection period is closed

i tried to explain them that assets works in different manner than AP but still they need a documentation on the ablove functionality