September 28, 2026 - Respondent API

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Bug fix: Create Project accepts B2B job functions without job titlesFixed a bug in Create Project. A B2B project that set targetJobFunctions and omitted targetJobTitles (or sent an empty array) was rejected with a 400 error: professionalJobTitles should not be empty.Job titles have been optional since the Oct 30, 2024 update. Until this fix, targeting by job function alone only worked by creating the project with titles and then removing them on a draft update.Create Project now accepts functions-only targeting. When you do send targetJobTitles, the maximum of 30 job titles per project still applies.

{
  "targetMarketType": "b2b",
  "targetProfessionalIndustries": ["<industry-id>"],
  "targetJobFunctions": ["<job-function-id>"]
}

See Targeting audiences effectively.