problem of Booking of GRN for LOT Material

Dear Expert,

In project huge materials we are receiving in LOT, and we can not book GRN until lot is completed . Lot completion duration is vary case to case basis ie 15 days to one year also , and due to this every month we are facing Audit observation of GRN delays.

Please help to avoid or overcome to this problem of Booking of GRN for LOT Material like other material ,without waiting for lot completions.

Regards

Tanmoy_mm.