AIF how to return multiline fault exception XML for File system adapter inbound service

Hi,

Currently AX 2012 returns only one line of the exception in fault exception which will not give clear information about the issue;

Using file system adapter, third party drops the xml to the location, AX picks up and process in response it will return fault exception (with only one line of exception)  XML in cases of errors.

Requirement how to customize so that AX send's multiline or complete exception information in Fault XML.

Thanks & Regards,

Venkatesh