Append option for csv file

i’m trying to append in a csv file, but it is throwing “Append file action is not supported for the protocol: sldb” error every time. How to achieve this?

According to the documentation for File Writer, Append is supported for file, FTP, FTPS and SFTP protocols only, but it sounds like you have the CVS file saved in SnapLogic.

can i do the append operation if i’m creating the file while running the pipeline?