---
title: invalidCredentialPredicate
framework: authenticationservices
role: symbol
role_heading: Instance Property
path: authenticationservices/asauthorizationproviderextensionloginconfiguration/invalidcredentialpredicate
---

# invalidCredentialPredicate

The predicate string that identifies invalid credential errors.

## Declaration

```swift
var invalidCredentialPredicate: String? { get set }
```

## Mentioned in

Creating a JSON Web Encryption (JWE) login response

## Discussion

Discussion If the server returns an HTTP 400 or HTTP 401 error when authenticating, the system uses this predicate on the response body JSON. It then determines whether the error is due to an invalid password. If this predicate is nil, an HTTP 401 error indicates an invalid credential.

## See Also

### Obtaining the recommended configuration

- [accountDisplayName](authenticationservices/asauthorizationproviderextensionloginconfiguration/accountdisplayname.md)