Problem in return quantity

Dear all

I'm facing problem in return quantity after deliver it in inventory, when i do the return transaction error message appeared.and nothing returned

Note that i applied the Landed cost Management module in our system, this quantity in LCM shipment has matched with supplier invoice and fright invoices also.

i tried to cancel all invoice whether supplier invoice and fright invoices, but also the error message appeared. 

please advise.

Thanks