# errors.TRANSITION_NOT_FOUND

## NAME

TRANSITION_NOT_FOUND — the requested workflow transition is not defined for the entity's current state.

## SYNOPSIS

HTTP: `404` `Not Found`. Retryable: `no`.

## DESCRIPTION

Entity workflow state machines define explicit transitions between states. This error fires when a transition is triggered that does not exist in the model's workflow definition for the entity's current state. Also occurs when the transition name is misspelled or when the entity is in a terminal state that allows no further transitions.

Not retryable. The workflow definition and the entity's current state determine which transition names are valid.

## SEE ALSO

- errors
- errors.WORKFLOW_NOT_FOUND
- errors.WORKFLOW_FAILED