When would I upload POS data? Gavin Long May 15, 2018 16:39 Updated Follow Please contact your financial institution to discuss the appropriate timing of uploading POS data. Related articles How to upload POS data Treez upload POS data MJ Freeway upload POS data What happens when a Hypur Pay payment is returned for insufficient funds? What are the required fields to upload POS data? Comments 0 comments Article is closed for comments.