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https://issues.apache.org/jira/browse/DAFFODIL-2129?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Steve Lawrence resolved DAFFODIL-2129.
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Resolution: Duplicate
> Optional elements should not require bracket [1] for indexing in expressions
> ----------------------------------------------------------------------------
>
> Key: DAFFODIL-2129
> URL: https://issues.apache.org/jira/browse/DAFFODIL-2129
> Project: Daffodil
> Issue Type: Bug
> Components: Compatibility, Middle "End"
> Affects Versions: 2.3.0
> Reporter: Michael Beckerle
> Priority: Major
> Fix For: 2.4.0
>
>
>
> Even if an element is declared with minOccurs="0" and maxOccurs="1" (or just
> has default maxOccurs, which is 1), we're still requiring that expresions
> index them using the square-bracket notation.
> This is not portable. For example ISO8583 does this everywhere. We have to
> modify it to use the brackets to make it work on daffodil. This should not be
> necessary.
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