How to append a record to a file when using FTP/File Adapter

Append to a file using “Put Operation”
While putting data to a file using FTP/File Adapter, it will overwrite if the file is already exists, sometimes requirement might be to append an existing file, instead of creating a new file for example when we are creating a log file we need to append the data, this can achieved by including an attribute Append = “true” for the tag in the wsdl file of the FTP/File adapter partner link(as shown below).