Start creative tests

Test a creative with an exact selected customer-version roster: interpret the creative, then launch one ordinary Research campaign. Name the creative by attachments uploaded with research.study-attachments (images, PDFs, text, MP3 or WAV audio, MP4 or WebM video), or, as a signed-in member, by the artifactId of a Studio creative or package, whose files Research imports under this request. First impressions use natural baseline reactions; buying scenarios prepare separate explicit situational context for every selected person before launch. Name metrics to rate every creative on each of them with one question on one shared scale, which the results' scorecard compares, and platforms to show the creative as people would meet it there. Preparation calls use Alpha credits and interviews use Research. With artifactId, brief is what to learn, in the member's words; Research names the creative by its title. Before anything is paid for, the start refuses an audience or seller it cannot use, more customers than a study interviews, files past a study's attachment bound, and an organization whose plan would refuse the test's interviews (research_creative_test_quotes_get answers the same first); pass that quote's expectedPrice to refuse a start whose interview price changed since. A same-key retry of an admitted test answers it with the exact frozen selection and imported files, without reading the creative again; read research_creative_tests_get_v2 for progress and research_results_get_v7 for the launched run's results.