Type: enum
Default: warning
Context: user
Restart: false
Values: [disabled, debug5, debug4, debug3, debug2, debug1, log, notice, warning, error]
Since: 16

When ICU locale validation problems are encountered, controls which message level is used to report the problem. Valid values are DISABLED, DEBUG5, DEBUG4, DEBUG3, DEBUG2, DEBUG1, INFO, NOTICE, WARNING, ERROR, and LOG.

If set to DISABLED, does not report validation problems at all. Otherwise reports problems at the given message level. The default is WARNING.

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