Publishers should assign BISACs in order of increasing importance. The least important BISAC should be assigned first; the most important, last.
Sample Data:
| name | isbn | bisacs |
|---|---|---|
| The Science of a Carve Turn | 9781633625808 | JNF051140; JNF054110; JNF054160 |
After ingestion of the sample data, the BISACs appear in TitleLeaf (product page, bisac assignment section) in the following order:
JUVENILE NONFICTION / Science & Nature / Physics (JNF051140)JUVENILE NONFICTION / Sports & Recreation / Olympics (JNF054110)JUVENILE NONFICTION / Sports & Recreation / Winter Sports (JNF054160)
See screenshot:
The resultant ONIX feed illustrates the importance given to the last assignment:
<BASICMainSubject>JNF054160</BASICMainSubject><Subject> <SubjectSchemeIdentifier>10</SubjectSchemeIdentifier> <SubjectCode>JNF051140</SubjectCode></Subject><Subject> <SubjectSchemeIdentifier>10</SubjectSchemeIdentifier> <SubjectCode>JNF054110</SubjectCode></Subject>