RUM JavaScript API - 1.345.1
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    Variable OVERRIDABLE_FIELD_KEYSConst

    OVERRIDABLE_FIELD_KEYS: readonly [
        URL$FULL,
        VIEW$URL$FULL,
        VIEW$DETECTED_NAME,
        VIEW$SOURCE$DETECTED_NAME,
        PAGE$URL$FULL,
        PAGE$DETECTED_NAME,
        CSP$STACK_TRACE,
        EXCEPTION$STACK_TRACE,
        UI_ELEMENT$DETECTED_NAME,
        FORM_ELEMENT$DETECTED_NAME,
        LABEL_ELEMENT$DETECTED_NAME,
        DRAG_ELEMENT$DETECTED_NAME,
        TRACE$ID,
        SPAN$ID,
    ] = ...

    Explicit event field keys that can be overridden via dynatrace.addEventModifier.