Message getting truncated

Hi,

I have a scenarios of xml file to flatfile.

incoming file can have invoice data, when there is single invoice in incoming file it is processing successfully but when there are multiple invoces,

message getting truncated that is I am not seeing the complete message in inbound payload.

Example:

Invoice

Transaction

shipping

Transaction

shipping

Transaction

shipping

If message comes like this it is processing successfully

Invoice

Transaction

shipping

Transaction

shipping

Transaction

shipping

Invoice

Transaction

shipping

Transaction

shipping

Transaction

shipping

If message somes like this, then message is getting truncated like below

Invoice

Transaction

shipping

Transaction

shipping

and throwing unexpected character "<" found.

Help would be appreciated

Thanks

Sarada