1971   EqGn in DGEN, EqSto in DSTO, and EqLod in DLOD

Created: 09 Apr 2025

Status: Triage

Part: Part 7-420 (2021; Edition 2, DER)

Links:

Page: 234, 246, and 257

Clause: A.3.1.7.3, A.3.1.8.3, and A.3.1.9.3

Paragraph: Table A.34, A.36, and A.38

Issue

Neither EqGn in DGEN, EqSto in DSTO, nor EqLod in DLOD is explained in the main text. If DGEN instance No. 1 is referred to by EnGn of DGEN instance No. 2, all data objects will have identical values. It is difficult to imagine a scenario where instance No. 2 is necessary.

Additionally, the presence conditions for EqSto in DSTO (mandatory) and EqGen in DGEN (Omulti) are not reasonable.

Proposal

The first option is to delete the three data objects from each logical node.

The second option is to explain the meaning of the data objects or the situations in which they are used, similar to clause 4.2.5.5.4.

The third option is to change the presence conditions of EqGn in DGEN and EqSto in DSTO to optional.

The first or second option is preferred.