• Article Type: General
• Product: Aleph
• Product Version: 20

Desired Outcome Goal:
*Retrieve records where the subfield $a is missing for tag 461 (only subfields $1 are present)

Procedure:
* Run Retrieve Catalog Records (ret-01) for retrieve all the records that contain 461 field
* Run Retrieve Catalog Records (ret-01) for retrieve only records where 461 field has subfield $a
* Use the outputs of the previews services as input in the Cross Files(ret-10) service selecting the Boolean operator "NOT"
* "NOT" operator takes all the records that are in the first input file but not in the second input file.

Category: GUI ILL (500)

• Article last edited: 10/8/2013