Sometimes, customers may want to upload files to accompany a transaction they're creating or as part of the account verification documents. Using this endpoint allows a customer upload such file to our storage system and then return the file url which can be further sent to the transaction creation endpoint to save the file alongside the other transaction details or the account verification endpoint . Files in this endpoint are photos
.png, .jpg, .jpeg and documents
.pdf, .doc, .docx, .xls.