Kipo,
Instead of using the C path, try to utilize your direct database connection to your sqlwork.sde
For example my original SQL geodatabase is Enterprise_SDE
Replicated database is Replicated_SDE
Feature Class is "python_precision"
Here is the path to the origin feature class using the database connection path:
Database Connections\Enterprise_SDE.sde\Enterprise.SDE.python_precision
I was able to get the code below to work just fine utilizing the actual database connection paths.
import arcpy
arcpy.CreateReplica_management(in_data="Database Connections\Enterprise_SDE.sde\Enterprise.SDE.python_precision", in_type="ONE_WAY_REPLICA", out_geodatabase="Database Connections\Replicated_SDE.sde", out_name="TabRep", access_type="FULL", initial_data_sender="PARENT_DATA_SENDER", expand_feature_classes_and_tables="ALL_ROWS", reuse_schema="DO_NOT_REUSE", get_related_data="GET_RELATED", geometry_features="", archiving="DO_NOT_USE_ARCHIVING")
Try that and let me know if that works!
~Alex