I have always assumed that the field limited weight was the smaller of the TODA limited and the ASDA limited weight.
almost .. the minimum of TOR, TOD and ASD limited weights. One of the reasons that this is not understood, generally, is that the majority of OEMs combine some of the AFM data and often TOR is not shown explicitly. Good British machines, on the other hand, tend to let it all hang out in all its glory ...
I'll check that too.
I was tempted to come back with a cheeky response but that probably would lower the tone of things .... best regards to you, good sir, and best of good fortune with your career.