diff --git a/source/reference/beta-program-private/many-to-one.txt b/source/reference/beta-program-private/many-to-one.txt index 32624aa02..45eff9ebf 100644 --- a/source/reference/beta-program-private/many-to-one.txt +++ b/source/reference/beta-program-private/many-to-one.txt @@ -42,6 +42,17 @@ commands when starting :ref:`mongosync `: To start the sync operation between the source clusters and the destination cluster, see :ref:`c2c-quickstart-synchronize`. +When beginning your sync operation for a many-to-one migration, add +the following parameter to the :ref:`/start ` requests: + +.. code:: + + "destinationDataHandling": "ignorePreExistingNamespaces" + +Setting ``"destinationDataHandling"`` to ``"ignorePreExistingNamespaces"`` +allows each migration to write to the destination cluster that may have +pre-existing namespaces from the other many-to-one migrations. + Behavior --------