path	value/explanation	url	count
invalid value (6 variant(s))			12
008/06 (008all06)	" "		2
008/23 (008book23)			2
Leader/08 (leader08)	0		2
776$ind1	" "		2
246$ind1	" "		2
650$ind2	" "		2
undefined subfield (3 variant(s))			6
773	0		2
911	#		2
911	a		2
repetition of non-repeatable subfield (2 variant(s))			4
773$t	there are multiple instances		2
773$*	there are multiple instances		2