[Home](./index.md) > [sip.js](./sip.js.md) > [StateTransitionError](./sip.js.statetransitionerror.md) ## StateTransitionError class An exception indicating an invalid state transition error occured. Signature: ```typescript export declare class StateTransitionError extends Exception ``` ## Constructors | Constructor | Modifiers | Description | | --- | --- | --- | | [(constructor)(message)](./sip.js.statetransitionerror._constructor_.md) | | Constructs a new instance of the StateTransitionError class |