If a specialist notices missing data on customer invoices with specific worktag combinations, what should they do?

Creating a custom validation is the appropriate course of action when a specialist identifies missing data on customer invoices that exhibit specific worktag combinations. Custom validations are essential tools within Workday that allow organizations to set specific rules and checks associated with data entry. By implementing a custom validation, the specialist ensures that any future invoices submitted with the relevant worktag combinations will be automatically checked for completeness and correctness.

This proactive measure enhances data quality and helps to minimize errors at the source, preventing potential issues that could arise from incomplete information. Such validations can also guide staff on required fields and data expectations, ultimately streamlining processes and improving overall efficiency in invoice management.

The other options do not adequately address the problem or may lead to further complications. Not addressing the issue by ignoring it could allow data inaccuracies to persist, potentially resulting in severe operational consequences. Modifying worktags without a clear understanding of the data requirements could lead to incorrect data being associated with other transactions. Contacting the supplier might be necessary if there was a misunderstanding, but it does not directly solve the issue of missing data on invoices that could be remedied through effective internal controls like custom validations. Therefore, creating a custom validation stands out as the most effective and systematic approach to tackle the identified issue.