destination | The subject mapping destination for the source subject. | string | - | Yes |
weight | A number between 0 and 100 (inclusive). The string form allows for a trailing % sign. Note, if the cluster field is used, weights across the destinations must add up to 100% on a per-cluster basis unless artifical message loss is desired for testing. | (multiple) | - | Yes |
cluster | If specified, the destination is cluster-scoped. Messages received by servers within the named cluster will only consider mappings with the same cluster name. Otherwise, it will fallback to non-cluster scoped mappings. | string | - | Yes |