AX 2012 R2 CU7 and Project Add-In integration

Hi all,

we set up AX 2012 Cu7 integration with Project Professional 2010 via Add-In and it worked for several weeks. Since yesterday, we have an error in project synchronization between Project Professional and AX (listed below).

The only error raised is in Application area of Event Viewer of the machine hosting Project Professional 2010 and AX Client. Below I list the error we observe.

Looks like the most important part of the message is "Duplicate Name Found (error)" but it is not clear what duplicated is found.

is it a problem in AX database? Or in project name, although there is only a project with such name.

Can someone help me out in determining what is wrong now?

Many thanks in advance.

Log Name: Application
Source: Microsoft Project Client Integration
Date: 7/11/2018 10:55:56 AM
Event ID: 0
Task Category: None
Level: Error
Keywords: Classic
User: N/A
Computer: servername.domain.priv
Description:
7/11/2018 10:55:56 AM - Sync failed.

7/11/2018 10:55:56 AM - at Microsoft.Dynamics.AX.Framework.OfficeAddin.Project.ProjectCategoryDataRowNameMapper.AddToMap(DataRow element)
at Microsoft.Dynamics.AX.Framework.OfficeAddin.Project.ProjectCategoryManager.PopulateCategories(Application application, Project project, String companyName, Boolean forceReloadProjectCategories)
at Microsoft.Dynamics.AX.Framework.OfficeAddin.Project.SyncToAx.DoSync()
at Microsoft.Dynamics.AX.Framework.OfficeAddin.Project.SyncBase.Sync(SyncInformation& information) (Error)

7/11/2018 10:55:56 AM - Duplicate Name found (Error)

7/11/2018 10:55:56 AM - Service: QueryServiceEndpoint\nBinding: System.ServiceModel.NetTcpBinding\nRemote Address: net.tcp://server:8201/DynamicsAx/Services/QueryService\nIdentity: schemas.xmlsoap.org/.../upn, Axservice@domain.priv\nFound in cache: True

7/11/2018 10:55:56 AM - Service: NetTcpBinding_ProjWBSService\nBinding: System.ServiceModel.NetTcpBinding\nRemote Address: net.tcp://server:8201/DynamicsAx/Services/AifProjWBS\nIdentity: schemas.xmlsoap.org/.../upn, Axservice@domain.priv\nFound in cache: True

7/11/2018 10:55:55 AM - Service: NetTcpBinding_ProjWBSService\nBinding: System.ServiceModel.NetTcpBinding\nRemote Address: net.tcp://server:8201/DynamicsAx/Services/AifProjWBS\nIdentity: schemas.xmlsoap.org/.../upn, Axservice@domain.priv\nFound in cache: True

7/11/2018 10:55:54 AM - Service: NetTcpBinding_ProjWBSService\nBinding: System.ServiceModel.NetTcpBinding\nRemote Address: net.tcp://server:8201/DynamicsAx/Services/AifProjWBS\nIdentity: schemas.xmlsoap.org/.../upn, Axservice@domain.priv\nFound in cache: True

7/11/2018 10:55:49 AM - Service: NetTcpBinding_ProjWBSService\nBinding: System.ServiceModel.NetTcpBinding\nRemote Address: net.tcp://server:8201/DynamicsAx/Services/AifProjWBS\nIdentity: schemas.xmlsoap.org/.../upn, Axservice@domain.priv\nFound in cache: True

7/11/2018 10:55:49 AM - Sync to Microsoft Dynamics AX

Event Xml:
<Event xmlns="schemas.microsoft.com/.../event">
<System>
<Provider Name="Microsoft Project Client Integration" />
<EventID Qualifiers="0">0</EventID>
<Level>2</Level>
<Task>0</Task>
<Keywords>0x80000000000000</Keywords>
<TimeCreated SystemTime="2018-07-11T08:55:56.000000000Z" />
<EventRecordID>5654297</EventRecordID>
<Channel>Application</Channel>
<Computer>server.domain.priv</Computer>
<Security />
</System>
<EventData>
<Data>7/11/2018 10:55:56 AM - Sync failed.

7/11/2018 10:55:56 AM - Duplicate Name found (Error)

7/11/2018 10:55:49 AM - Sync to Microsoft Dynamics AX

</Data>
</EventData>
</Event>