Is there a way to update a DFF?

Summary:

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Hello-

Is there a way to update an already existing DFF? We are trying to make it accept 'only numbers', but currently, it is set up as Data Type: Character, so both numbers and letters are being accepted for that field.

When I go to Manage Descriptive Flexfield is not allowing me to update the Data Type so I wonder if there is another way to update it so it only takes numbers.

Version (include the version you are using, if applicable):

23D

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