REST API Error Response Example

REST APIs should provide clear and structured error responses to help clients understand and resolve issues effectively. Below are examples of different types of error responses that an API might return.

Single Error Responses

Incorrect Username or Password

Validation Errors

Title Must Be Defined

Name Must Be At Most 50 Characters

This Attribute Must Be Unique

Authentication Errors

No Authorization Provided

Invalid Authentication

Multiple Errors

Name and Title Must Be Defined

Field-Specific Validation Errors

Field Too Short

Password and Confirm Password Must Match

Incorrect Email Format

These error responses provide a consistent structure, making it easier for clients to handle errors programmatically and display meaningful messages to users.