Once the urn:concept:investments adverts is with the code=active, you are able to create all the units related to the investment advert. Those adverts are exactly the same as "normal" adverts, with an extra field required in the advert payload — parent_uuid from the previous request.
xxxxxxxxxx102curl --request POST \--url https://api.olxgroup.com/advert/v1 \--header 'Accept: application/json' \--header 'Authorization: Bearer {{acces_token}}' \--header 'Content-Type: application/json' \--header 'X-API-KEY: {{api_key}}' \--data '{"title": "[qatest-mercury] Ogłoszenie testowe","description": "Czasami musimy dodać takie ogłoszenie, żeby zweryfikować działanie niektórych funkcji systemu. Liczymy na Twoją wyrozumiałość :) Radzimy skorzystać ponownie z naszej wyszukiwarki ofert.<br/><br/> Powodzenia w dalszych poszukiwaniach!","category_urn": "urn:concept:apartments-for-sale","parent_uuid": "be060341-45c4-4ce2-a368-45d0663a975d","market": "primary","contact": {"name": "Bartek Kowalski","phone": "663774007","email": "bartek.kowalski@testmail.com","photo": "https://i.imgur.com/9Em2tky.png"},"price": {"value": 750000,"currency": "PLN"},"location": {"lat": 53.364719,"lon": 21.564647,"exact": true},"images": [
