invalid XML character (Unicode: 0x14)

Hello All,

We have a outbound Interface(Proxy to File). When a message of a size 33 MB is triggered there is a error in PI mapping as below:

An invalid XML character (Unicode: 0x14) was found in the element content of the document.

We tried opening the payload using notepad/notepad++/XML Editor but it was not loading completly due to huge size.

hence requested user to send data in smaller chunks to find out the Issue. But when he sent the data in smaller chunks all the messags are successfully processed in PI.

I am confused when the message size is more there was a error, but when posted in smaller chunks how it worked?

Thanks&Regards,

Naresh