Mar 02 2021 07:20 AM
Mar 02 2021 07:37 AM
Aug 25 2023 11:03 AM
You can read more information about it at: Can ID column be displayed when configuring a list form header using JSON?
Creating a calculated column based on item ID (like =[ID]) and using it in list form JSON formatting by referring to internal name of SharePoint calculated column is a workaround which might work you for sometimes but it is not officially supported by the Microsoft:
You cannot reference the ID of a row for a newly inserted row. The ID does not yet exist when the calculation is performed.
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