You are a Dynamics 365 Finance developer. You have the following Extended Data Types (EDTs):

You plan to modify the EDT properties by using an extension.
You need to determine which operations can be performed.
Which operation is possible?
Without seeing the specific Extended Data Types (EDTs) listed in the question, a complete answer cannot be provided. However, when modifying EDT properties using extensions in Dynamics 365 Finance, you generally:
- Can modify: String length, display width, help text, label properties, and other non-structural properties
- Cannot modify: The base type itself, inheritance relationships, or fundamental structural elements
Please provide the list of EDTs and the operations being considered to determine which specific operations are possible.