This request is to add support for custom field integration between Jira Align and Azure DevOps at the Portfolio work item level. This is already possible for program features. 

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Background:

On Features, you can create up to 3 of the following

• Custom Field - Text Input
• Custom Field - Dropdown
• Custom Field - Text Area
• Custom Field - Multi Dropdown

If you add these as custom fields to the Feature work item, you will then have the ability to map these in Azure DevOps Settings by denoting the ADO field name