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# Zone Settings Panel

The Zone settings panel presents the details of a forwarding zone definition. In edit mode, you can modify the parameter values. The panel is split into Hub Settings and Spoke Settings, containing the same parameters.

From the left menu, select Zones, select the three dots above a zone, then select View Details.

## Durable Settings that Depend on Cluster Role

You can set parameter values that apply to message delivery and acknowledgment between clusters of the zone. Settings depend on the role of each cluster within the zone.

Hub Settings and Spokes Settings follow:

| • | TTL Settings: `Message Time To Live`

| • | Message Limit and Discard Policy Settings: `Message Limit, Discard Policy, Maximum Delivery Attempts, Byte Limit`

| • | Prefetch Settings: `Prefetch Count`

| • | Acknowledgement Batch Settings: `Batch Size`

| • | Swap Byte Limit

For descriptions of these parameters, see Durable Details Panel.

Note that the Acknowledgement Batch Settings > Batch Size parameter refers to how often one persistence cluster acknowledges messages forwarded from another persistence cluster. However, this does not set a maximum time limit before an acknowledgement is sent. If the count of pending messages never reaches the batch size, those messages are acknowledged at the discretion of the persistence service.

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TIBCO FTL® - Enterprise Edition

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