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| Description | MARC Field and relevant subfields | Current handling when field is repeated | Required handling when field is repeated | Current handling when subfield in one field is repeated | Required handling when subfield in one field is repeated | Notes | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LC | 050 $a (R) $b (NR) | Separate classification fields | Separate classification fields | One classification field | Separate classification fields, with 1st $a and its $b if present in first Instance field, and 2nd $a in second Instance field | |||||||
| NLM | 060 $a (R) $b (NR) | Separate classification fields | Separate classification fields | One classification field | Separate classification fields, with 1st $a and its $b if present in first Instance field, and 2nd $a (and its $b, if it has one) in second Instance field | |||||||
| UDC | 080 $a (NR) $b (NR) | Separate classification fields | Separate classification fields | n/a | n/a | Since $a is not repeatable within a field, no change is needed | ||||||
| Dewey | 082 $a (R) $b (NR) | Separate classification fields. If there is a slash in $a, remove it and close up the space | Separate classification fields. If there is a slash in $a, remove it and close up the space | One classification field | Separate classification fields, with 1st $a and its $b if present in first Instance field, and 2nd $a (and its $b, if it has one) in second Instance field | |||||||
| Gov Doc | 086 $a (NR) $z (R) | Separate classification fields. If $a and $z both present in the same 086 field, split them into separate Instance fields | Separate classification fields. If $a and $z are both present in the same 086 field, split them into separate Instance fields | Separate classification fields | Separate classification fields. If $a and multiple $z's are both present in the same 086 field, split them all into separate Instance fields | No change is needed | ||||||
| Local LC | 090 $a (R) $b (R) | Separate classification fields | Separate classification fields | One classification field | Separate classification fields, with 1st $a and its $b if present in first Instance field, and 2nd $a (and its $b, if it has one) in second Instance field | Local Dewey | 092 $a (R) $b (R) | n/a | n/a | n/a | n/a | Not included in the default MARC-to-
Instance
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Instance Examples
Based on the required handling above
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| Description | MARC Field and relevant subfields | Field mapping | Current handling when field is repeated | Required handling | Current handling | Required handling | Notes | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LC | 050 $a (R) $b (NR) | 050$a " " 050$b | TBDSome of the data from the second field is included | Use data from the first 050 only; ignore any subsequent | TBD050 field | All data from the field is included | Use data from the first $a and $b only; ignore any subsequent | |||||||||
| NLM | 060 $a (R) $b (NR) | 060$a " " 060$b | TBDData from both fields included | Use data from the first 060 only; ignore any subsequent | TBD060 field | All data from the field is included | Use data from the first $a and $b only; ignore any subsequent | |||||||||
| UDC | 080 $a (NR) $b (NR) | 080$a " " 080$b | TBDData from both fields included | Use data from the first 080 only; ignore any subsequent 080 field | n/a | n/a | Since neither subfield is repeatable within a field, no change is needed | |||||||||
| Dewey | 082 $a (R) $b (NR) | 082$a " " 082$b | TBDData from both fields included and mixed together | Use data from the first 082 only; ignore any subsequent | TBD082 field | All data from the field is included | Use data from the first $a and $b only; ignore any subsequent | |||||||||
| Gov Doc | 086 $a (NR) $z (R) | 086$a | TBDData from both fields included | Use data from the first 086 only; ignore any subsequent | if multiple $z? | TBD086 field | As long as only $a is mapped, all is fine | No change needed | ||||||||
| Local LC | 090 $a (R) $b (R) | 090$a " " 090$b | TBDSome of the data from the second field is included | Use data from the first 090 050 only; ignore any subsequent | TBD050 field | All data from the field is included | Use data from the first $a and $b only; ignore any subsequent | Local Dewey | 092 $a (R) $b (R) | 092$a " " 092$b | TBD | Use data from the first 092 only; ignore any subsequent | TBD | TBD | per Data Import Subgroup
Holdings and Item Examples
Based on the required handling above
| Description | MARC data | Sample MARC | Field mapping | Holdings/Item Call Number |
|---|---|---|---|---|
| LC | 2 050s | 050 14 $aB3199.A33 $bP7613 2000a | 050$a " " 050$b | B3199.A33 P7613 2000a |
| LC | 1 050 with 2 $a | 050 04 $aZ5853.M38 $bG37 1993 $aTA418.9.C6 | 050$a " " 050$b | Z5853.M38 G37 1993 |
| NLM | 2 060s | 060 10 $aW1 $bME9616J v.69 1997 | 060$a " " 060$b | W1 ME9616J v.69 1997 |
| NLM | 1 060 with 2 $a | 060 \0 $aW1 NE372F v.12 $aQU 95 S839 | 060$a " " 060$b | W1 NE372F v.12 |
| UDC | 2 080s | 080 \\$a001.81 $bB67 | 080$a " " 080$b | 001.81 B67 |
| Dewey | 2 082s | 082 04 $a300.723 $bHEA 082 04 $a338.7/6292/092 $bHEA $221 | 082$a " " 082$b | 300.723 HEA |
| Dewey | 1 082 with 2 $a | 082 04 $a300.723 $bHEA $a338.7/6292/092 | 082$a " " 082$b | 300.723 HEA |
| Gov Doc | 2 086s | 086 0\ $aD 210.6:M 56 086 0\ $aY 3.AT 7:6 M 56/ | 086$a | D 210.6:M 56 |
| Gov Doc | 1 086 with 2 $z | 086 0\ $aA 1.1: $zA 1.1/3:984 $zA 1.1/4:985 | 086$a | A 1.1 |
| Local LC | 2 090s | 090 14 $aB3199.A33 $bP7613 2000a | 090$a " " 090$b | B3199.A33 P7613 2000a |
| Local LC | 1 090 with 2 $a | 090 14 $aZ5853.M38 $bG37 1993 $aTA418.9.C6 | 090$a " " 090$b |
| Z5853.M38 G37 1993 |