We have a problem with our MARCXML data in KOHA. The order of the fields must be changed for many records. The problem affects all records that are newly created or changed by us. All <datafield> elements must appear after the <controlfield> elements. So far the <datafield> element with the unique ID of the record (MARC field 999 $c) is placed before the <controlfield> elements. The wrong order violates the MARCXML guidelines. before editing: <leader>00996xxx x22002417x 4200</leader> <controlfield tag="001">23330</controlfield> <controlfield tag="003">DE-1278</controlfield> <controlfield tag="007">t|</controlfield> <controlfield tag="008">161220s2002 xxu||||| |||| 00| 0 ger d</controlfield> <datafield tag="020" ind1=" " ind2=" "> <subfield code="a">3-89012-956-0</subfield> <subfield code="c">51,00 €</subfield> </datafield> after editing: <leader>01059xxx x2200265x 4200</leader> <datafield tag="999" ind1=" " ind2=" "> <subfield code="c">9911</subfield> <subfield code="d">9911</subfield> </datafield> <controlfield tag="001">23330</controlfield> <controlfield tag="003">DE-1278</controlfield> <controlfield tag="005">20190604142304.0</controlfield> <controlfield tag="007">t|</controlfield> <controlfield tag="008">161220s2002 xxu||||| |||| 00| 0 ger d</controlfield> <datafield tag="020" ind1=" " ind2=" "> <subfield code="a">3-89012-956-0</subfield> <subfield code="c">51,00 €</subfield> </datafield>