The "Multiplexing Not Enabled" error occurs when attempting to use features that rely on the Stream Controller without having it activated on your keyset.
Basic multiplexing functionality is available by default, however two advanced features require the Stream Controller to be enabled. These are:
- Channel Groups: Organize and subscribe to multiple channels through predefined groups.
- Wildcard Subscriptions: Subscribe to multiple channels using a single pattern.
To resolve the error, make sure to enable Stream Controller feature on the keyset in your Admin Portal.
NOTE: Stream Controller is enabled by default on all new keysets. If it has been disabled, it was likely done by a user or upon request to PubNub Support.
To learn more about Multiplexing, Channel Groups and Wildcard Subscribe, please visit our official documentation: