Error in deserializing body of reply message for operation 'syncMObjects'

[Anonymous]

When Creating Opportunity with following association, service fails the deserilization with following  error

Error in deserializing body of reply message for operation 'syncMObjects'

Code:

var Opportunity. = new MObject();

Opportunity.type = "Opportunity";
Opportunity.associationList = new[] { new MObjAssociation() };               
Opportunity.associationList[0].mObjType = "Company";
Opportunity.associationList[0].externalKey = new Attrib();
Opportunity.associationList[0].externalKey.name = "CrmAccount_Id";
Opportunity.associationList[0].externalKey.value = "4d463e3b-0176-0eb8-c80b-50ae65e11bfd";

and sync the opportunity to Marketo...

Actual message return from service ( on fiddler) is

Association type 'Company' with 'CrmAccount_Id' value '4d463e3b-0176-0eb8-c80b-50ae65e11bfd' not found

if i create 100 opportunity at a time, entire batch will fail even if only one opportunity has wrong value.

[Anonymous]

I found the reason why I was getting deserializing  error instead of status of each batch item.

There is problem on WSDL

<xs:complexType name="MObjStatus">
<xs:sequence>
<xs:element name="id" type="xs:int" minOccurs="1" maxOccurs="1" nillable="false"/>
<xs:element name="externalKey" type="tns:Attrib" minOccurs="0" maxOccurs="1" nillable="false"/>
<xs:element name="status" type="tns:MObjStatusEnum" minOccurs="1" maxOccurs="1" nillable="false"/>
<xs:element name="error" type="xs:string" minOccurs="0" maxOccurs="1" nillable="false"/>
</xs:sequence>
</xs:complexType>

When add/update Mobject fails, the service API does not return id, hence result can not be deserialized.  To solve the problem, either service must return some integer value on failure . e.g. 0 or  -1.

Or WSDL must be modifed to accomodate empty value.

That can be done two ways,  1) Make id nullable, or 2) Make id string

I solved my problem by changing the datatype to string

<xs:complexType name="MObjStatus">

<xs:sequence>
<xs:element name="id" type="xs:string" minOccurs="1" maxOccurs="1" nillable="false"/>
<xs:element name="externalKey" type="tns:Attrib" minOccurs="0" maxOccurs="1" nillable="false"/>
<xs:element name="status" type="tns:MObjStatusEnum" minOccurs="1" maxOccurs="1" nillable="false"/>
<xs:element name="error" type="xs:string" minOccurs="0" maxOccurs="1" nillable="false"/>
</xs:sequence>
</xs:complexType>