Load Error (takes long time and fails)

HI

In process chain one load is running for a long time and gets fails its just processin around 1000 plus

records only.When I checked in details tab in monitor it displays below messages

Under Extractiion

1095 Records sent ( 1095 Records received )

Under Transfer (IDocs and TRFC): Missing messages or warnings

Data Package 1 : arrived in BW ; Processing : Data packet not yet processed

Under Processing (data packet): Warning received

Data Package 1 ( 1095 Records ) : Missing messages

Update rules ( 1095 -> 0 Records ) : Warning received

DataStore Activation (Change Log) : not yet activated