Problems updating relations between 2 modules

Version 7.11.13
Sugar Version 6.5.25 (Build 344)

API REST v4_1/rest.php

Hello I have a problem relating register of different modules.
In this action I try to link a count to a site across the field:
Example:
$set_entry_parameters_account = array(
//session id
“session” => $session_id,
//The name of the module from which to retrieve records.
“module_name” => “Accounts”,
//Record attributes
“name_value_list” => array(‘id’ => $clienteBeetrack, ‘accounts_cat_sitio_1cat_sitio_idb’ => $idSitio
),
);
in the log it shows me this error

Undefined index: accounts_cat_sitio_1cat_sitio_idb in service/core/SoapHelperWebService.php on line 533

but in the table this field is with the same name
relacionsitio

and the relationship works in the crm but not in the REST service,
Could someone help me, maybe they have another name in the file, although I need to know where to look