path	value/explanation	url	count
invalid value (2 variant(s))			2
Leader/05 (leader05)	" "		1
264$ind2	" "		1
undefined subfield (3 variant(s))			3
886	h		1
886	x		1
886	z		1
repetition of non-repeatable subfield (1 variant(s))			1
886$a	there are multiple instances		1