3098099 - SDCCN: System Failure with destination NONE - Exception CX_SXML_ILLEGAL_ARGUMENT_ERROR

Sending session data to SAP (e.g. SAP EarlyWatch Alert) by means of transaction SDCCN is failing.

In the tasklog you notice an entry like below:

Error: System Failure with destination NONE

The error message can have different root causes. This KBA covers a specific root cause and is only valid if also below dump can be found in ST22.

Runtime Errors UNCAUGHT_EXCEPTION
Exception CX_SXML_ILLEGAL_ARGUMENT_ERROR

Short text
An exception occurred that was not caught.

What happened?
The exception 'CX_SXML_ILLEGAL_ARGUMENT_ERROR' was raised, but it was not
caught anywhere along
the call hierarchy.

Since exceptions represent error situations and this error was not
adequately responded to, the running ABAP program
'CL_SXML_WRITER================CP' has to be
terminated.

Error analysis
An exception occurred that is explained in detail below.
The exception, which is assigned to class 'CX_SXML_ILLEGAL_ARGUMENT_ERROR', was
not caught in
procedure "GET_PBOX_ZIP" "(METHOD)", nor was it propagated by a RAISING clause.
Since the caller of the procedure could not have anticipated that the
exception would occur, the current program is terminated.
The reason for the exception is:
The transferred value is not valid for the type of XML document

CX_SXML_ILLEGAL_ARGUMENT_ERROR, CL_SXML_WRITER================CP, GET_PBOX_ZIP , KBA , SV-SMG-SDD , Service Data Download , Problem