Is there any restriction for the value set of AFF segment?

Summary:

I think that the value set of AFF segment is limited by 25 digits.

Is there any restriction besides that?

For example we can't use "dependent" as the type. or we should use only "Text" as the sub-type. we shouldn't use date/time as the data-type.

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

Latest

Code Snippet (add any code snippets that support your topic, if applicable):

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