SFTP Connection Error - Auth fail for methods 'publickey,password'

Question

HI Team, 
 We are trying to connect SFTP to Appian Server using the SFTP Smart service, We are getting the error - " Auth fail for methods 'publickey,password' "

We are providing all the required configration mention below. 
 'type!{plugins.ps.appiancorp.com/.../}FT_Config'( serverHostName: "hostname", serverPort: 22, scsExternalSystemKey: "key", privateKeyFile: private key , usePerUserCredentials: false(), ) 
 Plugin Verions - 4.1.0 
 We have tried multiple times to connect using ppk , pem files , still we are getting the Auth fail issue. 
 Help us with some guidance , if anyone gonne throught this.

lqprth · Answer

We&rsquo;ve encountered this issue before, and in our case, it was caused by an unintended space in the passkey configured in the Admin Console . Make sure that the scsExternalSystemKey is linked to a valid Third-Party Credentials entry with the correct username and passphrase, and double-check for any extra spaces or formatting issues. If the issue persists, verify that your SSH key uses a supported and modern algorithm such as rsa-sha2-256 , rsa-sha2-512 , or ed25519 , as older algorithms like ssh-rsa may no longer be supported. For deeper troubleshooting, enable DEBUG logging by adding log4j.logger.com.botw.cmpo.plugins.sftp=DEBUG to the appian_log4j.properties file. This can provide more insight into the root cause of the authentication failure.

SFTP Connection Error - Auth fail for methods 'publickey,password'

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