CSF:Update Debrief Lines (Debrief Posting Program) completed with Worning

Hi,

while i am changing the Assignment status to 'Completed' Background request CSF:Update Debrief Lines (Debrief Posting Program)  is completed with warning and changes Debrief status to 'Completed with erros'.

please find the below screen-shot.

Log of the background request:

Start of log messages from FND_FILE +---------------------------------------------------------------------------+ p_validation_mode is :A Validate Mode...!!! I should not be here Return Status isS Invalid Location provided. Location type code or location id cannot be null for an Item instance. +---------------------------------------------------------------------------+ End of log messages from FND_FILE +---------------------------------------------------------------------------+