Message from SAP PI using MII

Hi Experts

say, MII 12.1 is passed with message of size (20 MB) from SAP PI through SOAP or HTTP call. Can MII handle such size of message or will this be truncated at some certain size? Is there any limit of MII 12.1 to handle message data coming from SAP PI thru SOAP/HTTP calls?

Appreciate your inputs/ideas

Regards

Som