Create a channel. Requires Publisher Plus.

Keyword field name is keywords (not keyWords).

isPublic: Marked required in ChannelFields, but channel create drops required fields the caller cannot EDIT. Publisher / Publisher Plus have no EDIT on isPublic, so it is not required for those roles (omit it). Primis Admin / Account Manager must send isPublic.

Optional fields below (deleteAfterDays, level, rank, geo, dma, domains, domainTargeting, domainsAction, etc.) are included in the create schema for all roles (only required fields are permission-filtered). Create does not re-check field EDIT on write.