The pre-defined field CharacterName can’t be modified or updated directly.
We suggest you define a CharacterDisplayName field and store itin the character data or character read-only data, you can update them via client/server API UpdateCharacterData or server API UpdateCharacterReadOnlyData.
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Accessing the history of a character's statistics
UpdateCharacterReadOnlyData Vs UpdateCharacterData
How can I get a characters create date value which can be found in the characters overview?
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