You cannot send multiple files (seperate files) via AS2 in a single transaction as far I know…
But yes you can send wrapped XML (that contains XML list (root tag) and make one XML wrapper if your TP OK with the format you can share some DTD/Schema of your doctype and test with them:
This is the only way I can think off:
<?XML?>
--> --> TP has to break/process this Actual XML's (6 multiples in your case) and extrac the content from each XML their end
HTH,
RMG
#webMethods#webmethods-Protocol-and-Transport#Integration-Server-and-ESB