# Class: JOSEAlgNotAllowed [util/errors](../modules/util_errors.md).JOSEAlgNotAllowed An error subclass thrown when a JOSE Algorithm is not allowed per developer preference. ## Hierarchy - [`JOSEError`](util_errors.joseerror.md) ↳ **`JOSEAlgNotAllowed`** ## Table of contents ### Constructors - [constructor](util_errors.josealgnotallowed.md#constructor) ### Properties - [code](util_errors.josealgnotallowed.md#code) - [code](util_errors.josealgnotallowed.md#code) ## Constructors ### constructor • **new JOSEAlgNotAllowed**(`message?`) #### Parameters | Name | Type | | :------ | :------ | | `message?` | `string` | #### Inherited from [JOSEError](util_errors.joseerror.md).[constructor](util_errors.joseerror.md#constructor) #### Defined in [util/errors.ts:16](https://github.com/panva/jose/blob/v3.14.0/src/util/errors.ts#L16) ## Properties ### code • **code**: `string` A unique error code for the particular error subclass. #### Overrides [JOSEError](util_errors.joseerror.md).[code](util_errors.joseerror.md#code) #### Defined in [util/errors.ts:58](https://github.com/panva/jose/blob/v3.14.0/src/util/errors.ts#L58) ___ ### code ▪ `Static` **code**: `string` = `'ERR_JOSE_ALG_NOT_ALLOWED'` A unique error code for the particular error subclass. #### Overrides [JOSEError](util_errors.joseerror.md).[code](util_errors.joseerror.md#code) #### Defined in [util/errors.ts:56](https://github.com/panva/jose/blob/v3.14.0/src/util/errors.ts#L56)