protection for L1 items with only BGPR0 (ATR-24781)
this is to make sure all L1 items are defined with either BGRP2 (CALREQ) or with a bunch group that excludes BGRP2, ie BGRP12
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this is to make sure all L1 items are defined with either BGRP2 (CALREQ) or with a bunch group that excludes BGRP2, ie BGRP12