AoU: ETAS_RTACAR_SM_RTE_031
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The validation of AoU `ETAS_RTACAR_SM_RTE_031` is performed by verifying that the schema file used by 
the RTEGen tool to validate AUTOSAR XML description files is not overridden.

By default, the RTEGen tool uses a predetermined version of the AUTOSAR schema, which is embedded in the RTEGen executable. 
The version used is specified in the RTE Reference Manual.

There is an option available to override the embedded schema version, for example, to allow validation against a newer unsupported AUTOSAR schema version. 
This can be done with the key 'ValidateARXMLAgainstSchema' in the RTEGen.ini file, available as part of the RTEGen tool installation.
It is highly recommended not to use this option when RTEGen is used to generate the RTE for a safety-relevant ECU system. 
Using this option can lead to the generation of incorrect RTE code. 
 
The safety check accesses the RTEGen.ini file and checks that the mentioned key is not used.

.. tip:: Rte Installation folder

    Use the mandatory option `rte-inst-folder` to specify the path to the installation folder of the RTEGen tool.
    The required value is the folder where the 'bin' folder is located. The check will scan the folder structure to find the RTEGen.ini file.


.. include:: ../rules/ETAS_RTACAR_SM_RTE_031.rst