Uploads offline conversions to a Microsoft Advertising account so that sales or leads recorded outside the website are attributed to the ad clicks that produced them. conversion_name = an offline conversion goal in the account (list_microsoft_conversion_goals; create one with create_microsoft_conversion_goal if missing). conversions = a JSON array or one row per line as 'msclkid=...;datetime=2026-08-01T14:30:00Z;value=2500'; msclkid and datetime (UTC) are required, value is optional. confirm=false previews, confirm=true uploads.