Session logs please, not XML logs.

Log XML WinSCP
<?xml version="1.0" encoding="UTF-8"?>
<session xmlns="http://winscp.net/schema/session/1.0" name="******CTG7Y5@****150673.rm.cloudtotvs.com.br" start="2024-06-11T13:48:07.329Z">
<mv>
<filename value="/Arquivos_legado/Pendentes/AlteracaoSecao.xlsx" />
<destination value="/Arquivos_legado/Processados/AlteracaoSecao.xlsx" />
<result success="true" />
</mv>
<mv>
<filename value="/Arquivos_legado/Processados/AlteracaoSecao.xlsx" />
<destination value="/Arquivos_legado/Pendentes/AlteracaoSecao.xlsx" />
<result success="true" />
</mv>

Log xml .Net
<?xml version="1.0" encoding="UTF-8"?>
<session xmlns="http://winscp.net/schema/session/1.0" name="******CTG7Y5@****150673.rm.cloudtotvs.com.br" start="2024-06-11T14:05:39.245Z">
<group name="open sftp://******CTG7Y5@****150673.rm.cloudtotvs.com.br:2323 -hostkey=&quot;*&quot; -timeout=15" start="2024-06-11T14:05:39.878Z">
</group>
<group name="pwd" start="2024-06-11T14:05:40.049Z">
<cwd>
<cwd value="/" />
<result success="true" />
</cwd>
</group>
<group name="stat -- &quot;/Arquivos_Legado/processados/AlteracaoSecao.xlsx&quot;" start="2024-06-11T14:05:41.827Z">
<stat>
<filename value="/Arquivos_Legado/processados/AlteracaoSecao.xlsx" />
<result success="false">
<message>Can't get attributes of file '/Arquivos_Legado/processados/AlteracaoSecao.xlsx'.</message>
<message>No such file or directory.
Error code: 2
Error message from server: No such file</message>
</result>
</stat>
<failure>
<message>Can't get attributes of file '/Arquivos_Legado/processados/AlteracaoSecao.xlsx'.</message>
<message>No such file or directory.
Error code: 2
Error message from server: No such file</message>
</failure>
</group>
<group name="mv &quot;/Arquivos_Legado/Pendentes/AlteracaoSecao.xlsx&quot; &quot;/Arquivos_Legado/Processados/AlteracaoSecao.xlsx&quot;" start="2024-06-11T14:06:45.687Z">
<failure>
<message>Error moving file '/Arquivos_Legado/Pendentes/AlteracaoSecao.xlsx' to '/Arquivos_Legado/Processados/AlteracaoSecao.xlsx'.</message>
<message>Permission denied.
Error code: 3
Error message from server: Permission denied</message>
</failure>
<mv>
<filename value="/Arquivos_Legado/Pendentes/AlteracaoSecao.xlsx" />
<destination value="/Arquivos_Legado/Processados/AlteracaoSecao.xlsx" />
<result success="false">
<message>Permission denied.
Error code: 3
Error message from server: Permission denied</message>
</result>
</mv>
</group>

So please post logs both from GUI and the .NET.

Realizando via WINSCP.exe funciona normalmente mover o arquivo com o usuário. Se chamo o método via código .net lança a exception.

Does the teste1 folder exist? Do you have write permissions there? Can you move the file there in WinSCP GUI? Or in any other client? Post logs.

I am problems move files - error

Permission denied.
Error code: 3
Error message from server: Permission denied ao mover o arquivo /teste/Teste1.xlsx para /teste1/Teste1.xlsx.

at WinSCP.SessionLogReader.Read(LogReadFlags flags)
at WinSCP.ElementLogReader.Read(LogReadFlags flags)
at WinSCP.SessionElementLogReader.Read(LogReadFlags flags)
at WinSCP.ElementLogReader.Read(LogReadFlags flags)
at WinSCP.CustomLogReader.TryWaitForNonEmptyElement(String localName, LogReadFlags flags)
at WinSCP.Session.MoveFile(String sourcePath, String targetPath)