1252   Data-Instance-ID: is 01 allowed?

Created: 06 May 2014

Status: In Force (green)

Part: Part 7-2 (2010; Edition 2)

Links: #1071 Length of DO name

Page: 182

Clause: 22.2

Paragraph:

Category: Issue for edition 2 of this part

Issue

It is not clear whether Data-Instance-ID with leading zero is allowed from the standard. For instance GGIO.Ind01.

Some experts say it is forbidden.

However, Tissue 1071 seems to indicate that it is allowed, but it would be the same as GGIO.Ind1 in the previous example. In such a case, it makes no sense to have both representations.

(The are arguments for allowing leading zero, in order to make sorted displays easier, however these are presentation issues.)

Proposal

Suggest to explicitly forbid a leading zero in a data object instance.