PreviewUpdateFunctionError is in Preview status and is subject to change without notice. For more information about Preview status, see the GraphQL API policy.UpdateFunctionErrorPossible user errors when updating a function. This page containsPossible TypesDuplicateFunctionNameError PREVIEW DuplicateFunctionVariableKeyError PREVIEW InvalidCodeFileNameError PREVIEW InvalidFunctionNameError PREVIEW InvalidFunctionVariableKeyError PREVIEW InvalidFunctionVariableValueError PREVIEW