The createdBy field on a CustomReport identifies which team member originally designed the report layout and blocksJson. This is useful when a layout produces unexpected output — you can ask the creator about the design intent. It also helps teams manage a library of custom reports across multiple projects: if you find a useful layout created by a colleague, you know who to consult for guidance on customizing it. The field is automatically populated from your session at creation time.
Technical section
Data model, API, and internals — visible to developers.