Figure A: Notification of document availabilityFigure B: OSF checking document availability
The following diagram describes the exchange flows for registration and retrieval of documents hosted in WIPO DAS by notification to OSF

The following diagram describes the exchange flows for registration and retrieval of documents hosted in WIPO DAS and the OSF checking on regular basis statuses of retrievals requests




Exchange flow to register document



StepAPI RequestNotes
(1a) - OFF requests a pre-signed URL from WIPO DAS to upload a file identified by a file idPOST /das/v1/requests/files/url-uploads

Not required if OFF keeps the actual document file content in its own digital library

(1b) - OFF uploads the document file content using a pre-signed URL given in step (step 1a)File upload via PUT
(1c) - OFF requests document registration to WIPO DAS by referring to the uploaded file content by the corresponding file idPOST /das/v1/requests/registrations





Exchange flow to correct filing date or parent application details in which the foreign priority document is held 



StepAPI RequestNotes
(1c) - OFF requests document registration to WIPO DAS by specifying the new document attributesPUT /das/v1/requests/registrations



Exchange flow to replace document content for correction purpose 



StepAPI RequestNotes
(1a) - OFF requests a pre-signed URL from WIPO DAS to upload a file identified by a file id POST /das/v1/requests/files/url-uploads

(1b) - OFF uploads the corrected document file content using a pre-signed URL given in step (1a)



(1c) - OFF requests document registration to WIPO DAS by referring to the uploaded file content by the corresponding file idPUT /das/v1/requests/registrations



Exchange flow to retrieve document hosted in WIPO DAS



StepAPI RequestNotes
(2a) - OSF sends a document retrieval request to WIPO DAS and receives a request acknowledgement id POST /das/v1/requests/retrievals
(2b) - WIPO DAS prepares the requested document for download and notifies the OSF of the document availability (i.e. Figure A) by referring to the request acknowledgement id returned in step (2a)POST /das/v1/requests/notificationsAlternatively , OSF may use the check status (i.e. Figure B) to download the document content when it is reported as available by WIPO DAS (i.e. GET /das/v1/requests/retrievals) 

(2c) - OSF retrieves file location URL from WIPO DAS to download the document file content

POST /das/v1/requests/url-downloads

Downloads can be repeated while the requested document is not deleted from WIPO DAS

(2d) - OSF downloads file from WIPO DAS 



(2e) - Optionally OSF deletes the download files from the DAS transit zoneDELETE /das/v1/requests/filesIf OSF does not delete the downloaded file, WIPO DAS will delete it after a pre-defined period (e.g. 1 week)




Fig. AFig. B