path	value/explanation	url	count
obsolete code (1 variant(s))			1
008/33 (008book33)	" "		1
invalid value (5 variant(s))			5
008/06 (008all06)	" "		1
008/29 (008book29)	" "		1
008/30 (008book30)	" "		1
008/31 (008book31)	" "		1
Leader/08 (leader08)	0		1
non-empty indicator (1 variant(s))			1
911$ind1	0		1
undefined subfield (2 variant(s))			2
911	#		1
911	a		1