Authority control: 650/655 Subject Thesaurus Validation

Context:  650/655 bib fields are used to describe subjects. These subjects carry information as to its classification source. For authority control/linking, a cataloger wants to make sure that the bib 650/655 is linked to the right authority record that comes from the correct classification source.

Feature will support

• Apply subject thesaurus validation rules on MARC bib fields 650/655

• Handle 650/655 indicator 2 invalid or null values when create/edit bib via UI or Data import 

• Handle bib subfield 2 when indicator 2 = 7 when create/edit bib via UI or Data import 

• Handle authority 040 / 040 subfield f to support source code to populate linked bib subfield 2 

  • Include support for create/edit authority via UI or Data import 

• Handle authority 008 position 11 as the value must match 650 and 655 indicator 2 value to link 

  • Include support for create/edit authority via UI or Data import 

• Tenant configuration not available via UI for the following 

  • Enable subject thesaurus validation per bib field

• Implementation must account for Enhanced consortia support 

• Evaluate performance when making updates via data import.