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A member of type {0} with name '{1}' is already defined in {2} '{3}' by the extension '{4}'.
Description
Multiple members with the same name are defined by the same or several extensions.
How to fix this diagnostic?
A member (a field, control, action, or method) with this name is already defined on the object, sometimes by another extension that also extends it.
To fix it:
- If you didn't intend to define the member twice, remove the duplicate.
- If you need a new member, give it a unique name.
- When several extensions extend the same object, prefix your member names with a short identifier for your extension to avoid collisions with other publishers.