Pause a LinkedIn creative (ad)

Sets one creative (an ad in Campaign Manager) to PAUSED so it stops serving while its campaign (ad set) keeps running on its other creatives. Nothing is deleted and the performance history stays. Use when: a creative is clearly losing on enough data to say so — check linkedin_analyze_creative_performance first, which will not give a verdict below 1,000 impressions. Do not pause the last active creative on a live campaign: the campaign stays ACTIVE, spends nothing, and looks healthy in every list. Add the replacement first. Do not pause a "fatiguing" creative as the fix. Fatigue means the audience has seen it too often; a fresh creative into the same audience is what helps, and pausing without a replacement just shrinks delivery. LinkedIn only allows an ad to be paused once its review is APPROVED: one still in review, or rejected, is refused with that explanation rather than attempted, and neither is serving meanwhile. To stop delivery whatever the ads say, pause the campaign (ad set). Returns the creative read back, so the pause is confirmed.