Returned when the request has an error, check the code and message for more information about the error

Validation error response, when the request has invalid data, check the details for more information on what is wrong.
e.g.: When creating a new record, if the user tries to create a record with a missing required field, the server can return a 400 status code with a validation error response.

Unauthorized response, when the user is not authenticated or the authentication token is missing in the header.

Forbidden response, when the user is authenticated but does not have the necessary permissions.

The record is in an state that cannot be edited, check the message and code for more information on why the record cannot be edited.
e.g,: When a payment has already been paid, it's value cannot be changed.