506 Restrictions on Access Note

Field definition and scope:

Field 506 contains information about restrictions imposed on access to the described materials.

For published works, this field contains information on limited distribution. For continuing resources, the restrictions must apply to all issues.

Field 506 is repeatable.

Guidelines for applying content designators:, see table below:

For indicator and subfield code definitions and examples, and designator repeatability, see table below:

Position	Description	Repeatability
Field 506	Restrictions on Access Note	R
Indicator:
First	Restriction
#	No information provided
0	No restrictions
1	Restrictions apply

Second	Undefined; contains a blank

Subfield code:
$a	Terms governing access	NR
$b	Jurisdiction	R
$c	Physical access provisions	R
$d	Authorized users	R
$e	Authorization	R
$f	Standardized terminology for access restriction	R
$g	Availability date	R
$q	Supplying agency	NR
$u	Uniform Resource Identifier	R
$2	Source of term	NR
$3	Materials specified	NR
$5	Institution to which field applies	NR
$6	Linkage	NR
$8	Field link and sequence number	R

Input conventions:

Content designator history:

Subfield $g - Availability date [new, 2019]

Subfield $q - Supplying agency [new, 2019]