Hootsuite Common Errors Error Reference 401 Unauthorized Cause: Access token expired (tokens last 1 hour). Fix: Refresh token via OAuth: 403 Forbidden Cause: App lacks required permissions or user doesn't own the resource. Fix: Check app scopes in developer portal. Ensure user has access to the social profile. 422 Unprocessable Entity — scheduledSendTime Cause: Scheduled time is in the past or invalid ISO 8601 format. Fix: Always use future dates in ISO 8601: 422 — socialProfileIds Cause: Profile ID invalid or disconnected. Fix: List profiles first: and verify IDs. 429 Too Many Requests Cause…