The difference between signature_request_signed and all_signed callback events

Here's a quick breakdown of signature_request_signed vs. signature_request_all_signed:

signature_request_signed - all this indicates is that one signer has signed. If there are 10 signers on a single signature request you will receive this event 10 times.

signature_request_all_signed - this actually indicates that ALL signers have signed and the document has been converted and is ready for download.

It is a best practice to wait for the signature_request_all_signed event before trying to download the documents. If not, it is quite possible that you might get an error message:

Documented here:
https://app.hellosign.com/api/reference#WarningsAndErrors

If you do not wait for the signature_request_all_signed event it is also quite possible that you will download an incomplete version of the document.