Hi,
Can you upload files by using
TalendHelpCenter:tFileFetch component?
In Basic Settings, check "POST method" and set the POST-parameter "Name" and "File" name here.
In Advanced Settings, check "Upload file" and define parameters for each file(Name, file)
Or you can define the parameters of the requested HTTP operation or post parameters from file by using
TalendHelpCenter:tHttpRequest
Best regards
Sabrina