API SOAP Orders sorting doesn't work

[MaximKitsenko]

steps to reproduce:
Make API call with this body:

<soap:Envelope xmlns:soap="http://www.w3.org/2003/05/soap-envelope" xmlns:def="http://hereshouldbeyourmagentostoreurl.com/soap/default?services=salesOrderRepositoryV1"><soap:Header/>
   <soap:Body>
      <def:salesOrderRepositoryV1GetListRequest>
         <searchCriteria>
            <filterGroups>
               <!--Zero or more repetitions:-->

            </filterGroups>
            <!--Optional:-->

            <!--Optional:-->

            <!--Optional:-->
            <sortOrders><item><field>createdAt</field><direction>DESC</direction></item></sortOrders><pageSize>100</pageSize><currentPage>1</currentPage>
         </searchCriteria>
      </def:salesOrderRepositoryV1GetListRequest>
   </soap:Body>
</soap:Envelope>

Th answer is:

<?xml version="1.0" encoding="UTF-8"?>
<env:Envelope xmlns:env="http://www.w3.org/2003/05/soap-envelope" >
   <env:Body>
      <env:Fault>
         <env:Code>
            <env:Value>env:Receiver</env:Value>
         </env:Code>
         <env:Reason>
            <env:Text xml:lang="en">Internal Error. Details are available in Magento log file. Report ID: webapi-57c80c791008f</env:Text>
         </env:Reason>

      </env:Fault>
   </env:Body>
</env:Envelope>

The problem is in sorting since when i removed this field:

<soap:Envelope xmlns:soap="http://www.w3.org/2003/05/soap-envelope" xmlns:def="http://hereshouldbeyourmagentostoreurl.com/soap/default?services=salesOrderRepositoryV1">
   <soap:Header/>
   <soap:Body>
      <def:salesOrderRepositoryV1GetListRequest>
         <searchCriteria>
            <filterGroups>
               <!--Zero or more repetitions:-->

            <item><filters><item><field>updated_At</field><value>2016-03-10 20:24:00</value><conditionType>gt</conditionType></item><item><field>updated_At</field><value>2016-09-10 20:24:00</value><conditionType>lt</conditionType></item></filters></item></filterGroups>
            <!--Optional:-->

            <!--Optional:-->

            <!--Optional:-->
            <pageSize>100</pageSize><currentPage>1</currentPage>
         </searchCriteria>
      </def:salesOrderRepositoryV1GetListRequest>
   </soap:Body>
</soap:Envelope>

I received correct answer:

<?xml version="1.0" encoding="UTF-8"?>
<env:Envelope xmlns:env="http://www.w3.org/2003/05/soap-envelope" xmlns:ns1="http://hereshouldbeyourmagentostoreurl.com/soap/default?services=salesOrderRepositoryV1">
    <env:Body>
        <ns1:salesOrderRepositoryV1GetListResponse>
            <result>
                <items>
                    <item>
                        <baseCurrencyCode>USD</baseCurrencyCode>
                        <baseDiscountAmount>0</baseDiscountAmount>
                        <baseGrandTotal>16</baseGrandTotal>
...

[veloraven]

@MaximKitsenko thank you for the report.
Please, provide the used version. If the problem is actual for a specific tag, please, specify it and be sure that the latest update was used.

[MaximKitsenko]

@veloraven This bug related to Magento 2.1.0

[SerhiyShkolyarenko]

@MaximKitsenko I spotted that you wrote incorrect field name for sorting. Please, try created_at instead of createdAt. It worked for me.

[SerhiyShkolyarenko]

We are closing this issue because it hasn’t been updated in more than two weeks. If you can still reproduce this issue, please create a new GitHub issue report.

[MaximKitsenko]

@SerhiyShkolyarenko @veloraven Sorry for delay. I had vacation. The code i provided above is generated by Visual Studio, that means that your wsdl is incorrect, wsdl says generate 'createdat' instead of 'created_AT'.
So, looks like you have incorrect WSDL -> that leads to incorrect models -> that leads to topic