[permission-denied] WinSCP: Permission denied. Error code: 3 Error message from server: Permission denied

I am using WinSCP and keep on experiencing this error every time I try to replace/overwrite a file. I have been able to transfer/overwrite a file before with out any problem but not anymore.

The exact error message:

Cannot create remote file 'var/lib/tomcat6/webapps/..../myfilename.filepart'.
Permission denied.
Error code: 3
Error message from server: Permission denied

I have tried changing the ownership which I was successful at because when I refreshed, from tomcat6, it is now under my login name. But I am still denied. This is giving me a very hard time testing our reports as I just need to see if it's already working i n the deployed app.

I also tried tweaking some of the options in the WinSCP preferences such as Drag & Drop and Endurance but nothing made any difference.

I reinstalled PuTTY and WinSCP, but nothing changed.

UPDATE:
I am able to replace my file by coming out 1 notch from the file path (ex. var/lib/myfolder/myproject/web-inf/report, back 1 notch to var/lib/myfolder/myproject/web-inf/) then type

sudo chown myuser:myuser report -R

but my reports will have errors, so I had to type sudo chown tomca6:tomcat6 report -R then the error will be cleared and I now can view my replaced file.

This is very inconvenient as I have to do this every time. Is there anything I can do to fix this? thanks

You possibly do not have create permissions to the folder. So WinSCP fails to create a temporary file for the transfer.

You have two options:

• Grant write permissions to the folder to the user or group you log in with (myuser), or change the ownership of the folder to the user, or

• Disable a transfer to temporary file.

  In Preferences, go to Transfer > Endurance page and in Enable transfer resume/transfer to temporary file name for select Disable: