If CII-SR-464 is flagged as warning, the wording must be "should" not "shall"

[AndreasPvd]

Here is the wording:

	<assert test="$CII-SR-464" flag="warning" id="CII-SR-464">[CII-SR-464] - PayerSpecifiedDebtorFincancialInstitution shall not be used.</assert>

As this element will be supported by EN16931:2026 the text should reflect this already and use the correct wording according to syntax rule wording standards used in EN16931

[phax]

The current validation rules are targeted for EN 16931:2017.
As the EN 16931:2026 Syntax Binding is not yet finalized, the current validation rules will not make any assumptions about the new version.

[rkottmann]

The current validation rules are targeted for EN 16931:2017. As the EN 16931:2026 Syntax Binding is not yet finalized, the current validation rules will not make any assumptions about the new version.

Fully support this. We should not mix versions.