Replace every step of a draft campaign (email, wait, LinkedIn visit, connection request, message, post reaction, InMail, If / else, Wait for them to accept). A workflow (stepModel workflow, or steps with key, next, yesNext or noNext) branches: condition and wait_for_connection steps continue on yesNext or noNext, other steps on next; each points at another step's key or end. Steps are checked first: a field the step type would drop, missing text, {TOKEN} single braces or paths that don't hold together are rejected, not saved. Configure sender pools on the campaign; step sender ids are legacy-only

Every step, in send order (a workflow may list them in any order; they are stored in path order). Rejected, not trimmed: a field the step type would drop (onlyIf off email/post-like steps, a body on a visit, reply-in-thread on the first email, condition fields its check ignores), a missing subject or required body, an overlength note/message/InMail subject, out-of-range wait/withdrawal/post-age/acceptance values, {TOKEN} single braces, which would be sent as typed, and workflow paths that don't hold together (duplicate keys, a target that isn't a key or end, a condition or wait_for_connection without both yesNext and noNext, or any other step with them).