diff --git a/bibliotheca/Taskfile.yml b/bibliotheca/Taskfile.yml
index 1ee9460..e0ace67 100644
--- a/bibliotheca/Taskfile.yml
+++ b/bibliotheca/Taskfile.yml
@@ -125,6 +125,8 @@ tasks:
         "$CLIENT" -P {{.PORT}} {{.PROJECT}} --apply config/main/7100a.json > {{.LOG}}
       - > # spec_B_T_04, spec_B_T_05: ISBN 2000
         "$CLIENT" -P {{.PORT}} {{.PROJECT}} --apply config/main/2000.json > {{.LOG}}
+      - > # spec_B_T_57: Formal falsche ISBNs in 2009 verschieben
+        "$CLIENT" -P {{.PORT}} {{.PROJECT}} --apply config/main/2009.json > {{.LOG}}
       - > # spec_B_T_04, spec_B_T_05: ISMN 2020
         "$CLIENT" -P {{.PORT}} {{.PROJECT}} --apply config/main/2020.json > {{.LOG}}
       - > # spec_B_T_29: ISSN 2010
diff --git a/bibliotheca/config/main/2009.json b/bibliotheca/config/main/2009.json
new file mode 100644
index 0000000..30a5b9d
--- /dev/null
+++ b/bibliotheca/config/main/2009.json
@@ -0,0 +1,25 @@
+[
+  {
+    "op": "core/column-addition",
+    "engineConfig": {
+      "facets": [],
+      "mode": "record-based"
+    },
+    "baseColumnName": "2000",
+    "expression": "grel:forEach(value.split('␟'), isbn, if(isbn.length() == 10, if(with(round(sum(forRange(1,10,1,i,toNumber(isbn[i-1])*i))%11),x,if(x == 10, 'X', x)).toString() == isbn[9], null, isbn), if(isbn.length() == 13, if(((10-(sum(forRange(0,12,1,i,toNumber(isbn[i])*(1+(i%2*2)) )) %10)) %10).toString()[0] == isbn[12], null, isbn), null))).join('␟')",
+    "onError": "set-to-blank",
+    "newColumnName": "2009",
+    "columnInsertIndex": 4
+  {
+    "op": "core/text-transform",
+    "engineConfig": {
+      "facets": [],
+      "mode": "record-based"
+    },
+    "columnName": "2000",
+    "expression": "grel:forEach(value.split('␟'), isbn, if(isbn.length() == 10, if(with(round(sum(forRange(1,10,1,i,toNumber(isbn[i-1])*i))%11),x,if(x == 10, 'X', x)).toString() == isbn[9], isbn, null), if(isbn.length() == 13, if(((10-(sum(forRange(0,12,1,i,toNumber(isbn[i])*(1+(i%2*2)) )) %10)) %10).toString()[0] == isbn[12], isbn, null), null))).join('␟')",
+    "onError": "keep-original",
+    "repeat": false,
+    "repeatCount": 10
+  }
+]
diff --git a/bibliotheca/config/main/template.txt b/bibliotheca/config/main/template.txt
index 8ea674e..b93be92 100644
--- a/bibliotheca/config/main/template.txt
+++ b/bibliotheca/config/main/template.txt
@@ -19,6 +19,7 @@ with(
     '1140',
     '1500',
     '2000',
+    '2009',
     '2010',
     '2020',
     '2201',
diff --git a/pica+/config/template.txt b/pica+/config/template.txt
index 4a6f8d6..44a0bfd 100644
--- a/pica+/config/template.txt
+++ b/pica+/config/template.txt
@@ -8,9 +8,10 @@ if(row.index - row.record.fromRowIndex == 0,
 + forNonBlank(cells['0100'].value, v, '003@ ' + '0' + v + '\n', '')
 + forNonBlank(cells['0110'].value, v, '003S ' + '0' + v + '\n', '')
 + forNonBlank(cells['2000'].value, v, forEach(v.split('␟'),x,'004A ' + '0' + x + '\n').join(''), '')
-+ forNonBlank(cells['2010'].value, v, '005A ' + '0' + v + '\n', '')
++ forNonBlank(cells['2009'].value, v, forEach(v.split('␟'),x,'004D ' + '0' + x + '\n').join(''), '')
 + forNonBlank(cells['2020'].value, v, '004F ' + '0' + v + '\n', '')
 + forNonBlank(cells['2201'].value, v, '004L ' + '0' + v + '\n', '')
++ forNonBlank(cells['2010'].value, v, '005A ' + '0' + v + '\n', '')
 + forNonBlank(cells['2199'].value, v, forEach(v.split('␟'),x,'006Y ' + '0' + x + '\n').join(''), '')
 + forNonBlank(cells['2240'].value, v, '007G ' + 'iZDB' + '0' + v + '\n', '')
 + forNonBlank(cells['1500'].value, v, '010@ ' + forEach(v.split('␟'),x,'a' + x).join('') + '\n', '')