3474137 - UNCAUGHT_EXCEPTION occurs when editing the Landscape XML file in transaction SLMT

When trying to save changes in the Landscape XML file in transaction SLMT a similar runtime error occurs as below:

Category                  ABAP programming error
Runtime Errors         UNCAUGHT_EXCEPTION
Except.                      CX_SXML_STATE_ERROR
ABAP Program          RSLSMT
Application Component  BC-SRV-ALV

An exception has occurred that was not caught.

 What happened?
     Exception 'CX_SXML_STATE_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, ABAP program 'CL_SXML_WRITER================CP' had to be terminated.

Error analysis
    An exception has occurred which is explained in more detail below. The exception is assigned to class 'CX_SXML_STATE_ERROR' and was not caught in procedure "WRITE_NODES" "(METHOD)", nor was it propagated by a RAISING clause.
    Since the caller of the procedure could not have anticipated this exception, the current program was terminated.
    The reason for the exception is:
    Method 'IF_SXML_WRITER~OPEN_ELEMENT' cannot be called at this position in the XML stream

SAP Basis 740 and above.

UNCAUGHT_EXCEPTION, SLMT, RSLSMT, CX_SXML_STATE_ERROR, Landscape XML, XML file , KBA , BC-SRV-ALV , SAP List Viewer , Problem