I am trying to insert 300 records, but I get the following error 414 Request-URI Too Large, but if I send 2 registers everything goes well

. How can I insert the 300 records into the report?

I share my code.

1. //Two Records 
   

2. $data_xml = "<ZohoCreator>
       <applicationlist>
           <application name='zoho-cdr'>
               <formlist>
                   <form name='Formulario_Carga_Inicial'>
                       <add>
                           <field name='ID_CDR'>
                               <value>1213</value>
                           </field>
                           <field name='RFC_CRM'>
                               <value>dede</value>
                           </field>
                       </add>
                       <add>
                           <field name='ID_CDR'>
                               <value>1415</value>
                           </field>
                           <field name='RFC_CRM'>
                               <value>fefe</value>
                           </field>
                       </add>
                   </form>
               </formlist>
           </application>
       </applicationlist>
   </ZohoCreator>";

3. $curl = curl_init();
   
       $url = "https://creator.zoho.com/api/xml/write?".http_build_query(['authtoken' => 'codeToken', 'scope' => 'creatorapi', 'zc_ownername' => 'name', 'XMLString' => $data_xml]);
   
       curl_setopt_array($curl, array(
         CURLOPT_URL => $url,
         CURLOPT_RETURNTRANSFER => true,
         CURLOPT_ENCODING => "",
         CURLOPT_MAXREDIRS => 10,
         CURLOPT_TIMEOUT => 0,
         CURLOPT_FOLLOWLOCATION => true,
         CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
         CURLOPT_CUSTOMREQUEST => "POST",
         CURLOPT_HTTPHEADER => array(
           "Content-Type: application/xml",
           "Cookie: 442b5845d7=f0ca98fc689b02462286b17d3e437fd5; zccpn=92167dc4-975f-4cab-89e4-3fc88eeb3c03; _zcsr_tmp=92167dc4-975f-4cab-89e4-3fc88eeb3c03; a4c02fa025=bf0bdc2fa4f4c1d32cc406c8ae7a93bf; JSESSIONID=346922BC9296563FFE3A816A073F2EBE"
         ),
       ));
   
       $response = curl_exec($curl);
   
   
       if ($response === false)
         {
             print_r('Curl error: ' . curl_error($curl));
         }
   
       curl_close($curl);
       echo $response;