sfp_api_laravel_serprati/app/Http/Requests/AssociateValidationRequest.php

<?php

namespace App\Http\Requests;

use Illuminate\Foundation\Http\FormRequest;

class AssociateValidationRequest extends FormRequest
{
    public function authorize(): bool
    {
        return true;
    }

    public function rules(): array
    {
        return [

            'cpf' => [
                'nullable',
                'string',
                'required_without_all:name,registration',
            ],

            'name' => [
                'nullable',
                'string',
                'required_without_all:cpf,registration',
            ],

            'registration' => [
                'nullable',
                'string',
                'required_without_all:cpf,name',
            ],

        ];
    }
}