Log in to the OLISS Web side, go to Workbench → Waiting Tasks → Crew Certificate - No Attachment interface, and follow these steps 1-4:

Instructions:

When the crew is on board and the crew certificate lacks attachments, Workbench - Waiting Task will only have tasks for crew certificates without attachments.

How to handle the task of missing attachments for seafarer certificates (documents) on the Web side.pdf