title: Use the `Message Queue` Pallet for DMP and XCMP dispatch queueing

doc:
  - audience: Parachain Dev
    description: Replaces the queueing capabilities of the `DMP and `XCMP-Queue` pallet for incoming messages with the `MessageQueue` pallet. This simplifies the code and improves security.

migrations:
  runtime:
    -
      pallet: "cumulus_pallet_dmp_queue"
      description: "Messages from the DMP dispatch queue will be moved over to the MQ pallet via `on_initialize`. This happens over multiple blocks and emits a `Completed` event at the end. The pallet can be un-deployed and deleted afterwards. Note that the migration reverses the order of messages, which should be acceptable as a one-off."

crates:
  - name: "cumulus_pallet_xcmp_queue"
    note: Pallet config must be altered according to the MR description.

host_functions: []