Beginning with Junos 12.2, the statement validation-state: unverified is sometimes encountered during BGP configuration when validating show route. This condition is harmless, and can either be ignored, or controlled by a policy statement.

The statement validation-state: unverified is encountered when executing the command run show route. 

This statement does not indicate an invalid path, but warns that this path has not been validated by Origin validation configuration.

Origin validation for BGP enables BGP to recognize when an autonomous system (AS) begins advertising all or part of another company's assigned network. BGP recognizes the error and responds in a way that avoids service interruptions.

To configure, include the validation statement (and associated child statements) at the [edit routing-options] hierarchy level. Also configure a policy with the from validation-database match condition, the then validation-state action, and the extended community (origin validation state).

As this display is harmless, you can ignore it or control it by policy-statement, as follows:

validation-state

(BGP-learned routes) Validation status of the route:

• Invalid—Indicates that the prefix is found, but either the corresponding AS received from the eBGP peer is not the AS that appears in the database, or the prefix length in the BGP update message is longer than the maximum length permitted in the database.
• Unknown—Indicates that the prefix is not among the prefixes or prefix ranges in the database.
• Valid—Indicates that the prefix and autonomous system pair are found in the database.