# BoostPostRequestPromotedObject
## Properties
**pixel_id** | **String** | TikTok Pixel. Either the numeric pixel id or the alphanumeric pixel code from Events Manager, which is resolved for you. |
**custom_event_type** | **String** | Optimization event, as a TikTok optimization_event code (e.g. ON_WEB_ORDER, SHOPPING, FORM) or the exact event name shown in Events Manager, which is resolved to its code. The event must already exist on that pixel, or TikTok rejects the ad group. |
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