API personalizada Ruta inválida de la API

Así que seguí este ejemplo para crear una API personalizada. Pero no estoy seguro si lo estoy llamando mal o si mi código no es correcto. Aquí está lo que tengo.

Estructura de la carpeta:

Mycompany
    Syncreports
      etc
        api.xml
        wsi.xml
        wsdl.xml
      Model
        Sync
          Api
            V2.php
          Api.php

/app/etc/modules/Mycompany_Syncreports.xml

<?xml version="1.0"?>
<config>
    <modules>
        <Mycompany_Syncreports>
            <active>true</active>
            <codePool>local</codePool>
    <depends>
                <Mage_Api />
            </depends>
        </Mycompany_Syncreports>
    </modules>
</config>

/app/code/local/Mycompany/Syncreports/etc/api.xml

<?xml version="1.0" encoding="UTF-8"?>
<config>
    <modules>
        <Mycompany_Syncreports>
          <version>1.0.0</version>
        </Mycompany_Syncreports>
    </modules>
  <api>
      <resources>
        <syncreports_sync translate="title" module="mycompany_syncreports">
            <title>Synchronization API</title>
            <model>syncreports/sync_api</model>
            <acl>syncreports/sync</acl>
            <methods>
                <info translate="title" module="mycompany_syncreports">
                    <title>Retrieve synchronization info</title>
                    <acl>syncreports/sync/info</acl>
                    <method>info</method>
                </info>
            </methods>
            <faults module="mycompany_syncreports">
                <project_not_exists>
                    <code>101</code>
                    <message>Requested project does not exist.</message>
                </project_not_exists>
                <invalid_data>
                    <code>102</code>
                    <message>Provided data is invalid.</message>
                </invalid_data>
                <save_error>
                    <code>103</code>
                    <message>Error while saving project. Details in error message.</message>
                </save_error>
                <remove_error>
                    <code>104</code>
                    <message>Error while removing project. Details in error message.</message>
                </remove_error>
            </faults>
        </syncreports_sync>
    </resources>
    <resources_alias>
        <sync>syncreports_sync</sync>
    </resources_alias>
    <v2>
        <resources_function_prefix>
            <sync>syncreportsSync</sync>
        </resources_function_prefix>
    </v2>
    <acl>
        <resources>
            <syncreports translate="title" module="mycompany_syncreports">
                <title>SyncReports</title>
                <sync translate="title" module="mycompany_syncreports">
                    <title>Synchronization</title>
                    <sort_order>110</sort_order>
                    <info translate="title" module="mycompany_syncreports">
                        <title>Info</title>
                    </info>
                </sync>
            </syncreports>
        </resources>
    </acl>
  </api>
</config>

/app/code/local/Mycompany/Syncreports/etc/wsi.xml

<?xml version="1.0" encoding="UTF-8"?>
<wsdl:definitions xmlns:typens="urn:{{var wsdl.name}}"
 xmlns:xsd="http://www.w3.org/2001/XMLSchema"
 xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/"
 xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/"
 xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/"
 name="{{var wsdl.name}}"
 targetNamespace="urn:{{var wsdl.name}}">
<wsdl:types>
    <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" targetNamespace="urn:{{var wsdl.name}}">
        <xsd:complexType name="syncreportsSyncInfoEntity">
            <xsd:sequence>
                <xsd:element name="entity_id" type="xsd:string" />
                <xsd:element name="name" type="xsd:string" />
                <xsd:element name="description" type="xsd:string" />
                <xsd:element name="status" type="xsd:string" />
                <xsd:element name="created_at" type="xsd:string" />
                <xsd:element name="updated_at" type="xsd:string" />
            </xsd:sequence>
        </xsd:complexType>
        <xsd:element name="syncreportsSyncInfoRequestParam">
            <xsd:complexType>
                <xsd:sequence>
                    <xsd:element minOccurs="1" maxOccurs="1" name="sessionId" type="xsd:string" />
                    <xsd:element minOccurs="1" maxOccurs="1" name="projectId" type="xsd:string" />
                </xsd:sequence>
             </xsd:complexType>
        </xsd:element>
        <xsd:element name="syncreportsSyncInfoResponseParam">
            <xsd:complexType>
                <xsd:sequence>
                    <xsd:element minOccurs="1" maxOccurs="1" name="result" type="typens:portfolioProjectInfoEntity" />
                </xsd:sequence>
             </xsd:complexType>
        </xsd:element>
    </xsd:schema>
</wsdl:types>
<wsdl:message name="syncreportsSyncInfoRequest">
    <wsdl:part name="parameters" element="typens:syncreportsSyncInfoRequestParam" />
</wsdl:message>
<wsdl:message name="syncreportsSyncInfoResponse">
    <wsdl:part name="parameters" element="typens:syncreportsSyncInfoResponseParam" />
</wsdl:message>
<wsdl:portType name="{{var wsdl.handler}}PortType">
    <wsdl:operation name="syncreportsSyncInfo">
        <wsdl:documentation>Retrieve project info</wsdl:documentation>
        <wsdl:input message="typens:syncreportsSyncInfoRequest" />
        <wsdl:output message="typens:syncreportsSyncInfoResponse" />
    </wsdl:operation>

</wsdl:portType>
<wsdl:binding name="{{var wsdl.handler}}Binding" type="typens:{{var wsdl.handler}}PortType">
    <soap:binding style="document" transport="http://schemas.xmlsoap.org/soap/http" />
    <wsdl:operation name="syncreportsSyncInfo">
        <soap:operation soapAction="" />
        <wsdl:input>
            <soap:body use="literal" />
        </wsdl:input>
        <wsdl:output>
            <soap:body use="literal" />
        </wsdl:output>
    </wsdl:operation>
</wsdl:binding>
<wsdl:service name="{{var wsdl.name}}Service">
    <wsdl:port name="{{var wsdl.handler}}Port" binding="typens:{{var wsdl.handler}}Binding">
        <soap:address location="{{var wsdl.url}}" />
    </wsdl:port>
  </wsdl:service>
</wsdl:definitions>

/app/code/local/Mycompany/Syncreports/etc/wsdl.xml

<?xml version="1.0" encoding="UTF-8"?>
<definitions xmlns:typens="urn:{{var wsdl.name}}" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/"
xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" xmlns="http://schemas.xmlsoap.org/wsdl/"
name="{{var wsdl.name}}" targetNamespace="urn:{{var wsdl.name}}">
<types>
    <schema xmlns="http://www.w3.org/2001/XMLSchema" targetNamespace="urn:Magento">
        <import namespace="http://schemas.xmlsoap.org/soap/encoding/" schemaLocation="http://schemas.xmlsoap.org/soap/encoding/" />
        <complexType name="syncreportsSyncInfoEntity"><!-- define type for retrieve info -->
            <all>
                <element name="entity_id" type="xsd:string" minOccurs="1" />
                <element name="name" type="xsd:string" minOccurs="1" />
                <element name="description" type="xsd:string" minOccurs="0" />
                <element name="status" type="xsd:string" minOccurs="0" />

                <element name="created_at" type="xsd:string" minOccurs="1" />
                <element name="updated_at" type="xsd:string" minOccurs="1" />
            </all>
        </complexType>
    </schema>
</types>
<message name="syncreportsSyncInfoRequest">
    <part name="sessionId" type="xsd:string" />
    <part name="projectId" type="xsd:string" />
</message>
<message name="syncreportsSyncInfoResponse">
    <part name="result" type="typens:syncreportsSyncInfoEntity" />
</message>
<portType name="{{var wsdl.handler}}PortType">
    <operation name="syncreportsSyncInfo">
        <documentation>Retrieve project info</documentation>
        <input message="typens:syncreportsSyncInfoRequest" />
        <output message="typens:syncreportsSyncInfoResponse" />
    </operation>
</portType>
<binding name="{{var wsdl.handler}}Binding" type="typens:{{var wsdl.handler}}PortType">
    <soap:binding style="rpc" transport="http://schemas.xmlsoap.org/soap/http" />
    <operation name="syncreportsSyncInfo">
        <soap:operation soapAction="urn:{{var wsdl.handler}}Action" />
        <input>
            <soap:body namespace="urn:{{var wsdl.name}}" use="encoded" encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" />
        </input>
        <output>
            <soap:body namespace="urn:{{var wsdl.name}}" use="encoded" encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" />
        </output>
    </operation>
</binding>
<service name="{{var wsdl.name}}Service">
    <port name="{{var wsdl.handler}}Port" binding="typens:{{var wsdl.handler}}Binding">
        <soap:address location="{{var wsdl.url}}" />
    </port>
  </service>
</definitions>

/app/code/local/Mycompany/Syncreports/Model/Sync/Api.php

<?php
  class Mycompany_Syncreports_Model_Sync_Api extends Mage_Api_Model_Resource_Abstract
  {
      public function info($projectId){
    return "This is the message: ".$projectId;
      }
}

/app/code/local/Mycompany/Syncreports/Model/Sync/Api/V2.php

<?php
class Mycompany_Syncreports_Model_Sync_Api_V2 extends Mycompany_Syncreports_Model_Sync_Api{

  public function info($projectId){
    return "This is the message: ".$projectId;
  }
}

Y así es como llamo a mi API:

<?php
$host = "127.0.0.1/magento/index.php";
$client = new SoapClient("http://".$host. "/api/soap/?wsdl");
$apiuser= "user";
$apikey = "123456";
$action = "syncreports.info";

try { 
    $session_id= $client->login($apiuser, $apikey);
$result = array();

$result= $client->call($session_id, $action, array("test"));
    var_dump($result);
}
catch (Exception $e){
    echo var_dump($e);
    throw $e;
}
?>

Al usar esta coad, obtengo un error: Error fatal: excepción de SoapFault no detectada: [3] Ruta de la API no válida

¿Alguna idea de cómo debería resolver esto?

/app/code/local/Mycompany/Syncreports/etc/config.xml

<?xml version="1.0" ?>
<config>
  <modules>
    <Mycompany_Syncreports>
        <version>1.0.0</version>
    </Mycompany_Syncreports>
</modules>
<global>
    <helpers>
        <mycompany_syncreports>
            <class>Mycompany_Syncreports_Helper</class>
        </mycompany_syncreports>
    </helpers>
</global>   
<admin>
    <routers>
        <adminhtml>
            <args>
                <modules>
                    <foo_bar before="Mage_Adminhtml">Mycompany_Syncreports_Adminhtml</foo_bar>
                </modules>
            </args>
        </adminhtml>
    </routers>
</admin>

<frontend>
    <routers>
        <syncreports>
            <use>standard</use>
            <args>
                <module>Mycompany_Syncreports</module>
                <frontName>syncreports</frontName>
            </args>
        </syncreports>
    </routers>
</frontend>

<adminhtml>
    <layout>
        <updates>
            <syncreports>
                <file>mycompany/syncreports.xml</file>
            </syncreports>
        </updates>
    </layout>
</adminhtml>    
</config>

Tu nombre de acción debe ser

$action = 'syncreports_sync.info';

En general, así es como debe verse un nombre de método API v1.

entity_alias.method
   |           |
   |           |------------the name of the method to call.Child of the `<methods>` tag in the `api.xml` file
   |  
   |--- the tag name you specified in `api.xml` inside the `<resources>` tag

[EDITAR]
Su otro problema está causado por el hecho de que falta las declaraciones del modelo config.xml.
Agregue esto dentro de la <global>etiqueta

<models>
    <syncreports>
        <class>Mycompany_Syncreports_Model</class>
    </syncreports>
</models>

Si desea utilizar mycompany_syncreportscomo un alias de modelo como lo hace para los ayudantes, coloque este xml en lugar del anterior

<models>
    <mycompany_syncreports>
        <class>Mycompany_Syncreports_Model</class>
    </mycompany_syncreports>
</models>

Pero en este caso necesita modificar su api.xml.
Cambia esta línea:

<model>syncreports/sync_api</model>

A este

<model>mycompany_syncreports/sync_api</model>

También tengo el mismo problema (ruta de acceso de API no válida). Por favor, alguien sabe déjame responder .. Aquí está mi código ¿Qué hice?

api.xml

<resources>

  <arb translate="title" module="mymodule">

    <title>Chiragdodia module</title>

    <model>mymodule/api</model>

    <methods>

      <storesList translate="title" module="mymodule">
        <title>Retrieve list of installed stores</title>
        <acl>arb/storesList</acl>
      </storesList>

    </methods>


  </arb>
</resources>
<acl>
  <resources>
    <arb translate="title" module="mymodule">
      <title>arb</title>
      <create translate="title" module="mymodule">
        <title>Create product</title>
      </create>

    </arb>
  </resources>
</acl>
  <v2>
  <resources_function_prefix>
    <arb>arb</arb>
  </resources_function_prefix>
</v2>

config.xml

1.1.65

<global>
    <helpers>
        <mymodule>
            <class>Chiragdodia_Mymodule_Helper</class>
        </mymodule>
    </helpers>
    <models>
        <catalog>
            <rewrite>
                <category_api>Chiragdodia_Mymodule_Model_Category_Api</category_api>
                <product_api>Chiragdodia_Mymodule_Model_Product_Api</product_api>
                <product_attribute_api>Chiragdodia_Mymodule_Model_Product_Attribute_Api</product_attribute_api>
                <product_attribute_media_api>Chiragdodia_Mymodule_Model_Product_Attribute_Media_Api</product_attribute_media_api>
                <product_link_api>Chiragdodia_Mymodule_Model_Product_Link_Api</product_link_api>
            </rewrite>
        </catalog>
        <core>
            <rewrite>
                <url>Chiragdodia_Mymodule_Model_Core_Url</url>
                <store>Chiragdodia_Mymodule_Model_Core_Store</store>
            </rewrite>
        </core>
        <mymodule>
            <class>Chiragdodia_Mymodule_Model</class>
        </mymodule> 
    </models>
</global>

resourcename no debería ser el mismo que en el siguiente api.xml

<rescustomapi>es mi nombre de recurso mientras que customapi es mi nombre de módulo. Puede ser que tengas los dos nombres iguales.

<?xml version="1.0"?>
<config>
    <api>
        <resources>
            <rescustomapi translate="title" module="customapi">
                <model>customapi/helloworld_api</model>
                <title>Custom HelloWorld API</title>
                <methods>
                   <setddapi translate="title" module="customapi">
                        <title>Mydons HelloWorld API</title>
                   </setddapi>
                </methods>
                <faults module="customapi">
                    <data_invalid>
                        <code>100</code>
                        <message>Invalid data</message>
                    </data_invalid>
                </faults>
            </rescustomapi>
          </resources>
      </api>
</config>