Problem Uploading Files Using Chilkat sFTP

Question

File upload returns "Status Code 8 - Invalid Parameter" response. Looking for some advice on what might be causing this.

I'm using Chilkat sFTP to transfer and receive files to and from multiple partners without issue but for a new partner I'm seeing the following error. The partner's tech team are asking if a passive connection is being invoked but I can't see any properties within Chilkat which would enable me to change this.

Log message:

ChilkatLog:
  OpenFile:
    DllDate: Jul 31 2014
    ChilkatVersion: 9.5.0.43
    UnlockPrefix: NORVICSSH
    Username: LVPAPP005:scheduleradminprod
    Architecture: Little Endian; 64-bit
    Language: .NET 2.0 / x64
    VerboseLogging: 0
    SshVersion: SSH-2.0-FTP Server ready
    SftpVersion: 3
    sftpOpenFile:
      remotePath: \GIB_DAILY_CENTAUR_POSITIONS_20190403.CSV
      access: writeOnly
      createDisposition: createTruncate
      v3Flags: 0x1a
      Sent FXP_OPEN
      StatusResponseFromServer:
        Request: FXP_OPEN
        InformationReceivedFromServer:
          StatusCode: 8
          StatusMessage: Invalid parameter
        --InformationReceivedFromServer
      --StatusResponseFromServer
    --sftpOpenFile
    Failed.
  --OpenFile
--ChilkatLog

Answer 1

You're confusing the SSH/SFTP protocol with the FTP protocol. The two are entirely different protocols. The concept of "passive" data transfers does not exist in SSH/SFTP as it does in the FTP protocol.