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Pydantic · Error

PydanticCustomError

PydanticCustomError lets a custom validator create a validation error with its own type, message template, and context. Use it when you need more control over the error details.

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Syntax

PydanticCustomError(error_type, message_template, context=None)

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  • PydanticKnownError
  • ValidationError
  • field_validator
  • ErrorDetails

Source: Pydantic Core. Checked 2026-11-03.