Failed to fetch the connection <connection name> specified for REH DB Log because multiple connections of different types have this name and the Integration Service cannot determine which one of these connections to use.
The specified database connection name exists as both a relational and application connection. When you entered the database connection name for the $Target Connection Value session property, you did not specify Relational: or Application: before the connection name.
Enter Relational: or Application: before the connection name for $Target Connection Value on the Properties tab of the session properties.