Field map fault: FieldDefinitionNotExistException: TF26027: A field definition Microsoft.VSTS.Common.AcceptanceCriteria in the work item type definition file does not exist. Add a definition for this field or remove the reference to the field and try again.

[radhiam]

error : 
[18:59:41 ERR] Field map fault
Microsoft.TeamFoundation.WorkItemTracking.Client.FieldDefinitionNotExistException: TF26027: A field definition Microsoft.VSTS.Common.AcceptanceCriteria in the work item type definition file does not exist. Add a definition for this field or remove the reference to the field and try again.
   at Microsoft.TeamFoundation.WorkItemTracking.Client.FieldDefinitionCollection.get_Item(String name)
   at Microsoft.TeamFoundation.WorkItemTracking.Client.FieldCollection.get_Item(String name)
   at MigrationTools.FieldMaps.AzureDevops.ObjectModel.FieldMergeMap.InternalExecute(WorkItem source, WorkItem target) in D:\a\1\s\src\MigrationTools.Clients.AzureDevops.ObjectModel\FieldMaps\FieldMergeMap.cs:line 47
   at MigrationTools.FieldMaps.AzureDevops.ObjectModel.FieldMapBase.Execute(WorkItemData source, WorkItemData target) in D:\a\1\s\src\MigrationTools.Clients.AzureDevops.ObjectModel\FieldMaps\FieldMapBase.cs:line 31

[MrHinsh]

Please read the documentation carefully.

The error message explains that "AcceptanceCriteria" is not on some targeted work items. You can't apply a mapping for fields that don't exist.

[Ruturaj1998]

so, sir can we comment down its respective mapping from configuration..json file i.e
{
"$type": "FieldMergeMapConfig",
"WorkItemTypeName": "*",
"sourceFields": [
"System.Description",
"Microsoft.VSTS.Common.AcceptanceCriteria"
],
"targetField": "System.Description",
"formatExpression": "{0}

Acceptance Criteria

{1}"
}

[MrHinsh]

You would need to specify which work item types you would be targeting.