Step
SFTP Server steps.
Message
Error connecting to SFTP server.
Cause
This error occurs when an SFTP connection attempt fails due to unsuccessful authentication. The message indicates that none of the available authentication mechanisms (such as password, public key, etc.) were accepted by the SFTP server. This can be caused by incorrect credentials, expired or missing SSH keys, or the server rejecting the connection due to misconfiguration or restrictions.
Resolution
Verify that your authentication credentials are correct:
Ensure the username and password or private key are up to date and correctly configured.
If using an SSH key, please ensure that the corresponding public key is correctly installed on the SFTP server.
Confirm that the SFTP server is reachable and accepting connections.
If IP whitelisting is enabled on the server, confirm that the correct addresses are allowed.
If all configurations are correct and the error still occurs, contact Synatic support for further assistance.
Error Detail
json
{
"message": "Error connecting to SFTP server: xxx.xxx.compute.amazonaws.com",
"error": {
"level": "client-authentication",
},
"statusCode": 401
"stepType": "Mapper",
"stepName": "Calculator",
"stepId": "xxx",
"mapStepId": "xxx",
"mapStepType": "Step",
"module": "Basic",
"commandProcessingError": null
}