[Openid-specs-ab] Issue #1699: OIDC4VCI - error response for missing nonce (openid/connect)

[David W Chadwick]

New issue 1699: OIDC4VCI - error response for missing nonce
https://bitbucket.org/openid/connect/issues/1699/oidc4vci-error-response-for-missing-nonce

David W Chadwick:

The current error code for a missing nonce is `invalid_or_missing_proof`. Is this the most appropriate error response for this? Or would a more accurate error of i`nvalid_or_missing_nonce` to be more appropriate. This latter error does inform the wallet what to do next in order to correct the error, whereas the former is perhaps too vague to allow the wallet to determine which next step to take.