About Settings to Avoid Error 451

[kaneko]

Uploading a file from the FTP Client may result in a 『451 Another command is pending currently, please try again later.』error as shown below.
Can I change the Wing FTP Server settings so that file uploads don't fail?

[03] Tue, 06 Feb 2024 17:17:35 (0000027) PASV
[04] Tue, 06 Feb 2024 17:17:35 (0000027) 227 Entering Passive Mode (10,8,16,27,68,139)
[03] Tue, 06 Feb 2024 17:17:37 (0000027) STOR 20240206_171729_137922_003856059.jpg
[04] Tue, 06 Feb 2024 17:17:37 (0000027) 150 Opening BINARY mode data connection for file transfer.
[03] Tue, 06 Feb 2024 17:17:37 (0000027) PASV
[04] Tue, 06 Feb 2024 17:17:37 (0000027) 451 Another command is pending currently, please try again later.
[03] Tue, 06 Feb 2024 17:17:37 (0000027) STOR 20240206_171729_137922_003856059.aft
[04] Tue, 06 Feb 2024 17:17:37 (0000027) 451 Another command is pending currently, please try again later.
[04] Tue, 06 Feb 2024 17:17:53 (0000027) 226 File received ok. Transferred:1Bytes;Average speed is:0.000KB/s
[03] Tue, 06 Feb 2024 17:18:13 (0000027) PWD
[04] Tue, 06 Feb 2024 17:18:13 (0000027) 257 "/***/***/***/***/***/***/***" is current directory.

[FTP]

Which FTP client did you use? Normally FTP client won't send another command when it is sending a file. And there is no option to avoid FTP error 451, what you can do is closing the current connection and opening a new FTP session.

[kaneko]

Thank you for your answer.

I don't know the details of FTP Client because it is a business equipment and developed by another company.
I understand that it cannot be avoided by setting up the Wing FTP Server side. Thank you.