DevOps to DevOps - System.ArgumentNullException: Value cannot be null

[middiu]

Hi All,

I'm facing the following issue migrating my workitems across two different DevOps Organizations.
I don't need to modify my workitems during the migration, I just need to copy them AS IS.

This is the config file I'm using:

{
    "TelemetryEnableTrace": false,
    "workaroundForQuerySOAPBugEnabled": false,
    "Source": {
        "Collection": "https://dev.azure.com/XYZ/",
        "Name": "ABC"
    },
    "Target": {
        "Collection": "https://dev.azure.com/XYZ/",
        "Name": "ABC"
    },
    "WorkItemTypeDefinition": {
        "Bug": "Bug",
        "Epic": "Epic",
        "Feature": "Feature",
        "Issue": "Issue",
        "Task": "Task",
        "Test Case": "Test Case",
        "Test Plan":"Test Plan",
        "Test Suite":"Test Suite",
        "User Story": "User Story"
        },
    "Processors": [ {
            "ObjectType": "VstsSyncMigrator.Engine.Configuration.Processing.WorkItemRevisionReplayMigrationConfig",
            "Enabled": true,
            "PrefixProjectToNodes": false,
            "UpdateSoureReflectedId": false,
            "QueryBit": "AND [System.WorkItemType] IN ('Issue', 'Feature', 'Test Case', 'Requirement', 'Task', 'User Story', 'Bug')",
            }]
}

and this is the output:

migration.exe Information: 0 :  Access granted 
WorkItemRevisionReplayMigrationContext: Found target project as ABC
migration.exe Warning: 0 :   [EXCEPTION] System.ArgumentNullException: Value cannot be null.
Parameter name: name
   at Microsoft.TeamFoundation.WorkItemTracking.Client.FieldDefinitionCollection.Contains(String name)
   at Microsoft.TeamFoundation.WorkItemTracking.Client.FieldCollection.Contains(String fieldName)
   at VstsSyncMigrator.Engine.WorkItemStoreContext.FindReflectedWorkItem(WorkItem workItemToFind, String reflectedWotkItemIdField, Boolean cache) in D:\a\1\s\src\VstsSyncMigrator.Core\Execution\ComponentContext\WorkItemStoreContext.cs:line 105
   at VstsSyncMigrator.Engine.WorkItemRevisionReplayMigrationContext.InternalExecute() in D:\a\1\s\src\VstsSyncMigrator.Core\Execution\MigrationContext\WorkItemRevisionReplayMigrationContext.cs:line 91
   at VstsSyncMigrator.Engine.MigrationContextBase.Execute() in D:\a\1\s\src\VstsSyncMigrator.Core\Execution\MigrationContext\MigrationContextBase.cs:line 35
MigrationEngine: The Processor WorkItemRevisionReplayMigrationContext entered the failed state...stopping run
[Info]: Run complete...
[Info]: -------------------------------END------------------------------
[Info]: Duration: 00:00:02.9628098
[Info]: End Time: 16/04/2019 8:38:16 PM

Any help would be really appreciated.

Regards

[MrHinsh]

Are you copying them within the same Project? That has never been tested.

I would recommned running in Debug within Visual Studio and checking out what is going wrong.

[inikalaichanka]

hi, I had the same issue, and the following solution helped:

1. you should define "ReflectedWorkItemIDFieldName" property in configuration.json file.
   E.g. "ReflectedWorkItemIDFieldName": "Source Item URL"
2. The property value should be either a real custom field in the target project or just any existing field with type of 'string' (as workaround - not sure about correctness).

• how to add a custom field for a project: https://docs.microsoft.com/en-us/azure/devops/organizations/settings/work/add-custom-field?view=azure-devops
• If you don't want to create a custom field, it seems to be enough to define 'ReflectedWorkItemIDFieldName' as any existing DevOps string field, say 'Title'. It won't overwrite migrated title, but source code 'accepts' it and doesn't throw an exception. Though the code throws an exception if you use a number field, say "ID".

ReflectedWorkItemIDFieldName is used as a field to write "http(s)://dev.azure.com/{source-company-name}/{source-project-name}/_workitems/edit/{source-item-id}" value. Please see method string CreateReflectedWorkItemId(WorkItem wi) for more details here https://github.com/nkdAgility/azure-devops-migration-tools/blob/master/src/VstsSyncMigrator.Core/Execution/ComponentContext/WorkItemStoreContext.cs

[github-actions]

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