path	value/explanation	url	count
invalid value (3 variant(s))			3
880->245$ind1	" "		1
880->245$ind2	" "		1
880->246$ind1	" "		1
undefined subfield (2 variant(s))			2
911	#		1
911	a		1
invalid ISBN (1 variant(s))			1
775$z	ISBN is not a valid ISBN 13 value		1