Adobe Sign Electronic Signature service; updated default Authentication URL and Security Protocol

The default Authentication URL for the Adobe Sign Electronic Signature service has been updated from "https://secure.na1.echosign.com/public/oauth" to "https://secure.au1.echosign.com/public/oauth". That is, the default URL has changed from a "na" North American to "au" Australia region.

When Initialising or Reinitialising the Authentication details if you receive the error "Unable to authorize access because the client configuration is invalid: invalid_request" it may mean the default Authentication URL is incorrect for your Adobe Account's region.

To find what URL you should be using login to your Adobe Sign Account in a browser. On the API page click on the "OAuth Tokens" link under API Introduction. On this page there should be an example URL like "https://secure.au1.echosign.com/public/oauth?redirect_uri=https://example.com/oauthDemo&response_type=code&client_id=d4HQNPFIXFD255H&scope=user_login:self agreement_send:account". The first part of this URL, i.e. "https://secure.au1.echosign.com/public/oauth" is what must be entered in the Authentication URL field.

In addition, support for Security Protocol TLS 1.0 and 1.1 are being removed and only TLS 1.2 will be supported. For more information see December 2016 Technical Updates at https://helpx.adobe.com/sign/help/adobesign_technical_updates.html.

Unfortunately this change clashes with the NZ PPSR G2B interface, and therefore changes have had to be made to enable both of these services to continue working.