GL-Service "Exon Mode"

For systems that target full gene but only interpret to the Exon level, it would be good to have a notion of validation/strictness defined only the 3rd field of nomenclature.  For example if you have a sequence that is C_17:01:01 in the exons and you know its not C_17:01:01:01/C_17:01:01:02/C_17:01:01:03 then reporting it as an ambiguity across these three allele is not accurate.
