Hello guys, Can anyone advise me to update ItemFulfillment in bulk? Currently, I'm updating every single IF with a tracking number by using rest API about 2~300 orders and it takes like 5~10 minutes. If bulk update is not applicable using Rest API, would you please advise me any an alternative solution?

Have your external system send a file to be uploaded to the file cabinet via a RESTlet and then pass on the file id to a Map/Reduce script to read the file which should contain the internal id of the IF and the tracking information to update the IF records using record.submitFields.

Thank you Eric. I have to learn how to upload file via RESTlet and how to write jsscript.