getting error while packing the LPN/Container

 hi 

i am trying to unpack and pack the lpn and my approach is

i have defined a procedure which will unpacks the lpn which is working fine(in procedure i am inserting the mtl_transactions_interface table luanching the inv_txn_manager)

and i have another procedure which will packs the same item into another LPN(in procedure i am inserting the mtl_transactions_interface table luanching the inv_txn_manager)

but i am getting the below error

'No containers were found that can store the item.'

should i populate the MTI simultaneously(means insert values for unpack and pack with same transaction_header_id and need to launch the inv_txn_manager for the same transaction_header_id)