The sync_replicated_item in the ArcGIS Python API fails with the error, "TypeError: 'bool' object does not support item assignment." when synchronizing a feature service replica created from a feature collection using multiple different ArcGIS organization which have a common replica created using the create_replicate_item.
Unable to reproduce sync errors between a feature service parent in ArcGIS Online and a corresponding feature service child in ArcGIS Online when the replica pair was created with the create_replica_item() and the latest release of the ArcGIS API for Python (1.8.1).