We getting stuck:
Saml Validator shows us the following error:
"Subject: Unable to map the subject to a Salesforce user"
We tried using the standard usernames our userbase has in production and also the updated usernames as lsited in the sandbox (where the '.sandboxname' is added as a suffix, and still get the above error.
As I understand it, if it works there should be the subject: username@domain.com Assertionid: randomlongstringofstuff.
Seems like we can't get the assertion to map correctly?
any help super appreciated.
I faced the same issue with a developer sandbox and what fixed it was to set the 'Entity ID' in Salesforce Single-Sign On Settings to 'https://saml.salesforce.com' and not to the My Domain (neither the sandbox's nor the production org's My Domain worked).
