Can An Irrevocable Trust Still Be Revoked With Consent or Due to a Mistake?

If getting consent to revoke a trust is not possible the settlor still has the option of revoking a trust based on the grounds that the power to revoke or some other language was omitted from the trust. It must be clear that the settlor was unaware of the language omission and/or the omission was not due to any action or suggestion by the settlor. Only the settlor can petition to revoke a trust based on a mistake.