514 Subfield $a - Attribute accuracy report:

Subfield $a contains an explanation of the accuracy of the identification of the entities and assignments of values in the data set. It may also include a description of tests used to determine data quality.

Example:

514 ##$aThe map layer that displays Special Feature Symbols shows the approximate location of small (less than 2 acres in size) areas of soils ... [subfield $a shortened in this example] $dQuarter quadrangles edited and joined internally and to surrounding quads. All known errors corrected.$eThe combination of spatial linework layer, Special Feature Symbols layer, and attribute data are considered a complete SSURGO dataset.$fThe actual on ground transition between the area represented by the Special Feature Symbol and the surrounding soils generally is very narrow with a well defined edge. The center of the feature area was compiled and digitized as a point. The same standards for compilation and digitizing used for line data were applied to the development of the Special Feature Symbols layer.