506 - Restrictions on Access Note (R)

$a - Terms governing access (NR)

Legal, physical, or procedural restrictions imposed on individuals wishing to see the described materials.

$b - Jurisdiction (R)

Name of a person, an institution, or a position or function within the institution, by whom or which the terms governing access are imposed and/or enforced, and to whom the restriction may be appealed.

$c - Physical access provisions (R)

Arrangements required for physical access.

$d - Authorized users (R)

Class of users or specific individuals (by name or title) to whom the restrictions in subfield $a do not apply.

$e - Authorization (R)

Source of authority for the restriction.

$f - Standardized terminology for access restriction (R)

Data taken from a standardized list of terms indicating the level or type of restriction.

$g - Availability date (R)

Date when the resource changes its access status, e.g., when it becomes freely available. Preferred structure for the date is according to Date and Time (ISO 8601): yyyymmdd.

$q - Supplying agency (NR)

A MARC Organization Code, ISIL, or textual name of the organization or project responsible for the data in the field.

$u - Uniform Resource Identifier (R)

Uniform Resource Identifier (URI), for example a URL or URN, which provides electronic access data in a standard syntax. The data that is accessed by the URI contains additional information about access restrictions.

$0 - Authority record control number or standard number (R)

Control number or standard number for a controlled term in subfield $f. See description of this subfield in Appendix A: Control Subfields.

$1 - Real World Object URI (R)

See description of this subfield in Appendix A: Control Subfields.

$2 - Source of term (NR)

MARC code that identifies the source of the term used to record the restriction in subfield $f. If terms from different sources are needed, separate fields should be used. Code from: Access Restriction Term Source Codes.

$3 - Materials specified (NR)

$5 - Institution to which field applies (NR)

See description of this subfield in Appendix A: Control Subfields.

$6 - Linkage (NR)

See description of this subfield in Appendix A: Control Subfields.

$8 - Field link and sequence number (R)

See description of this subfield in Appendix A: Control Subfields.