## isNotFound() function [​](/content/docs/sdk/core.isnotfound#isnotfound-function "Direct link to isNotFound(/index.html) function")

**Signature:**

```typescript
export declare function isNotFound(outcome: OperationOutcome): boolean;
```

## Parameters [​](/content/docs/sdk/core.isnotfound#parameters "Direct link to Parameters"/index.html)

| Parameter | Type              | Description | 
| ---       | ---               | ---         |
| outcome   | OperationOutcome  |             |

**Returns:**

boolean

- [isNotFound() function](/content/docs/sdk/core.isnotfound#isnotfound-function/index.html)  
- [Parameters](/content/docs/sdk/core.isnotfound#parameters/index.html)