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dc 3e39339332 blog: scope the validation section to Data Controller rules and note the MISSING= gotcha
- heading + intro now say these are Data Controller's MPE_VALIDATIONS rules,
  applied in the browser
- new paragraph on options MISSING: a regular missing prints as . unless the
  option changes it (eg to blank); special missings are never affected
- CASE split out of the rule list: it is a character rule, and a special
  missing always reaches the browser as an uppercase letter
- HARDREGEX and SOFTREGEX separated (SOFTREGEX warns rather than blocks, and
  is ignored when the column also has a HARDREGEX)
- LinkedIn copy kept in sync

Behaviour confirmed against the deployed services on a real Viya estate.
2026-09-23 07:17:46 +00:00
..
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