Examples of accession number formats

See some examples of accession numbers and how their formats may be constructed.

Example 1

Accession number

2011.1

Segments

Segment Segment type Pattern Ranges Meaning
2011 Year 0N+4Z No Start every accession number with a year.
1 Sequence 0N No Allow any number from 1 to 10,000

Delimiter

The delimiter is a full stop:

.

Example 2

Accession number

L2014.1

Segments

Segment Segment type Pattern Required Ranges Meaning
L Prefix 'L' Yes No Start every accession number with the letter T.
2014 Year 0N+4Z Yes No Next, enter the year in a four-digit format.
1 Sequence 0N Yes No Next, enter any number from 1 to 10,000.

Delimiter

The delimiter is a full stop:

.

Example 3

Accession number

VM235/689

Segments

Segment Segment type Pattern Required Ranges Meaning
VM Prefix 'VM' Yes No Start every accession number with the letters VM.
2014 Year 0N Yes No Next, enter the year in a four-digit format.
1 Sequence 0N Yes No Next, enter any number from 1 to 10,000. The Sequence segment allows up to 9 characters by default.

Delimiter

The delimiter is a forward slash:

/

Example 4

Accession numbers

P456.23.a-d

T256.3.a-t

E12.69.c

Segments

Segment Segment type Pattern Required Ranges Meaning

P

T

E

Prefix 'P';'T';'E' Yes No Start every accession number with the letter P, T, or E.

456

256

12

Sequence 0N Yes No Next, enter any number from 1 to 10,000.

23

3

69

Subsequence 0N+4Z Yes No Next, enter any number from 1 to 1,000

a-d

a-t

c

Alpha 0A+4Z No Yes Next, optionally enter any letter, up to four letters. This segment is optional and allows ranges.

Delimiter

The segment delimiter is a full stop:

.

The range delimiter is a hyphen:

-

See also