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MWL implementation guidance and best practice

Below please find guidance and best practice articles for MWL by using the search function or by browsing the articles by category.

General guidance for MWL

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Acknowledgements and non-repudiation
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Bar codes of various lengths
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Canonical spellings for names
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Comments
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Common language and script code combinations
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Communicating old currencies
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Communication of identifiers in DDEX messages
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Communication of percentages
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Date/time tags and Time Zone Designators
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Dealing with uncommon use cases
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Direction of writing
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Do DPIDs have hyphens?
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Do not use CDATA to concatenate data
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Field length and precision
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GDPR and UGC
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Handling 'odd' characters
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How many DPIDs Do I need?
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Identifiers for resources and releases and parties
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Identifying sound recordings and videos containing the same audio
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Java library's date bug for 2020
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Lengths of artist names
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Limitations of proprietary identifiers
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Locations of XSDs
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Malformed identifiers
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Multiple proprietary identification systems
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Namespace and file locations for the XSD for allowed value sets
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Order of XML attributes
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Origin and trustworthiness of MEAD and PIE information
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Parental advice labels
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PLine and CLine
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Preambles for XML-based DDEX messages
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Precision of numeric values in MWN
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Priorities for metadata items
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Referencing composites using ID and IDREF
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Semantics of repeating XML tags
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Special XML characters (and how to avoid &amp;)
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Time stamp for data accuracy
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Version compatibility
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Versioning Allowed Value Sets
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What can I do if I have data requirements not addressed by DDEX
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Who owns which rights?