LinkedIn ad performance — impressions, clicks, cost, website conversions, leads and social actions — pivoted by CAMPAIGN (default), CAMPAIGN_GROUP, CREATIVE, ACCOUNT, CONVERSION, PLACEMENT_NAME, IMPRESSION_DEVICE_TYPE, SERVING_LOCATION… or by AUDIENCE DEMOGRAPHICS: MEMBER_COMPANY_SIZE, MEMBER_INDUSTRY, MEMBER_SENIORITY, MEMBER_JOB_TITLE, MEMBER_JOB_FUNCTION, MEMBER_COUNTRY_V2, MEMBER_REGION_V2, MEMBER_COMPANY. The MEMBER_* pivots are what LinkedIn is uniquely good at — job title, seniority and company size are targeting dimensions no other platform reports — and LinkedIn allows exactly ONE pivot per report, so ask for them one at a time and join the answers yourself. An unknown pivot or granularity is refused BY NAME rather than forwarded. On a demographic pivot LinkedIn returns only the top 100 values, DROPS any value under 3 events (so the rows will not sum to the campaign total) and lags 12–24 hours behind the performance numbers — the note says so, every time. Window via since/until (YYYY-MM-DD). ZERO rows genuinely means no delivery in that window; say exactly that and never present zeros as measured performance. A LinkedIn TEST ad account NEVER returns analytics, and the note says so when that is what you are looking at. Read-only, free.