The IMOFAL 3 is now becoming the Single Window STO message, which must be used to submit the ship’s stores. It is not possible to correct errors in that message. This means that – once you have submitted the message to Customs via the Port Community System (PCS) – it is no longer possible to edit or cancel the message. So long as you have not yet submitted the message to Customs, you will remain able to upload new
(corrected) versions in the PCS.