Avid DNxHR, which stands for "Digital Nonlinear Extensible High Resolution", is a lossy UHDTV post-production codec engineered for multi-generation compositing with reduced storage and bandwidth requirements. The codec was specifically developed for resolutions considered above FHD/1080p, including 2K, 4K and 8K resolution. DNxHD will continue to be used for HD resolutions.
The codec cannot be used for resolutions under FHD/1080p.  
The paragraph says that the codec was specifically developed for resolutions above FHD/1080p, but does not expressly state that it "cannot" be used for resolutions that are under FHD/1080p.  Therefore, the statement is neither definitely correct nor definitely incorrect.  The system may have been confused by the ambiguity around whether the codec can exclusively be used for resolutions above FHD/1080p or whether it can also be used for those resolutions that are under FHD/1080p.
( z1 possible :polarity - :ARG1 ( z2 use :ARG1 ( z3 codec ) :ARG2 ( z4 resolution :mod ( z5 under :op ( z6 or :op ( z7 resolution :mod ( z8 format :name ( z9 name :op "FHD" ) ) ) :op ( z10 resolution :mod ( z11 format :name ( z12 name :op "1080" ) ) ) ) ) ) ) )