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Review invariants on DV_IDENTIFIER attributes

Description

Issuer and assigner are not null / empty but I'm not sure that information would be available in all cases on software systems.

I would like to know opinions on relaxing the rules for those two fields and make them optional.

ref: http://www.openehr.org/releases/1.0.2/architecture/rm/data_types_im.pdf page 20

Environment

None

Status

Reporter

Pablo Pazos

Components

Affects versions

RM Release 1.0.3

Priority

Major