path	value/explanation	url	count
invalid code (1 variant(s))			1
008/33-34 (008map33)	'|' in '||'		1
invalid value (1 variant(s))			1
270$ind2	1		1
undefined subfield (1 variant(s))			1
306	c		1
invalid classification reference (1 variant(s))			1
650$ind2	ind2 is '7' which means that the value should be found in subfield $2, but it is missing		1