You can only upload one document type at a time. For example, you can upload several FDV documents at once.
There is a limit of 50 documents. This means you must select and upload them in batches of 50. Note that new documents cannot exceed 64 MB.
Here is where you upload documents:
Upload a document by selecting a file or dragging and dropping it. Then choose the document type and click Upload.
You will receive a confirmation when the document is uploaded:
Once the documents are uploaded, click the button Go to document list and link products to the documents.
You can also link documents to products using Excel: Link documents to products.