# X_VERIFICATION_PURPOSE_UNKNOWN

## Means

a verification token was issued or consumed for a purpose nothing declared

## Typical cause

issueVerification or consumeVerification named a purpose no defineVerificationPurpose() call declared at boot

## Fix

`defineVerificationPurpose({ name: '<purpose>', template: 'auth.<purpose>', ttlMs })   # once, at boot`

[Auth and sessions](/error-codes#auth-and-sessions)