DELETE Rest API

//DELETE: Remove data or resources from Salesforce.
 @future (callout=true)
    public static void deleteContacts () {
        // Creating a new HTTP request
        HttpRequest req = new HttpRequest();
        
        // Setting the endpoint for the HTTP request
        // SourceOrgNamedCredential is your SourceORG Named Credential
        // 003F900001gMifVIAS is the Id of targetORG contact which we are updating
        req.setEndpoint('callout:SourceOrgNamedCredential/services/apexrest/Contact/003F900001gMifVIAS');
        
        // Setting headers for the HTTP request
        req.setHeader('content-type','application/json; charset=UTF-8');
        req.setHeader('Accept','application/json');
        
        // Setting the HTTP method to DELETE
        req.setMethod('DELETE');
        
        // Creating a new HTTP object
        Http http = new Http();
        
        // Sending the HTTP request
        HttpResponse response = http.send(req);
        
        // Debugging the response
        System.debug('response code : ' + response.getStatusCode());
        System.debug('response Body: ' + response.getBody());
        
    }