Transaction not yet indexed

ex7cmbYghQrFy6LUbrqNe9gVmfHUMr1Te77aSCWoo3DmVUZGZLRGcEBKWy4nugit7Vsr5tXeqkAHRcDLwCeF4Ue

The transaction signature is valid but not yet indexed by this RPC node, or the transaction failed before inclusion.