Combo Edit External Data Prior to Loading

Wondering if Oracle has a way or if anyone has developed a way to call the Combo Edit process (same as Journal Edit would do) and apply that logic to an external file so that errors can be detected before loading into GL.  With the complexitity of the Combo Data Table, Combo Group Table, Negative Rules, Postive Rules, multiple rules within one group, etc, getting a program to do exactly what the Journal Edit process does is leaving some holes and things are falling through.  We really need to validate the data before it leaves the external source system so