originalSclVersion and originalSclRevision are said to be set by IED tool when creating the ICD and missing attribute indicate an unknown value.
In case of mixing edition 1 and edition 2, the attribute will never been present in edition 1 ICD, so there will be no way to get the information in the edition 2 SCD.
Proposal
Update the description of the way to set this attribute to allow SCT to write it if it is not defined in the ICD (and only in this case).
The SCT will use the schema version of the ICD to set the value (if schema is 1.7 then originalSclVersion = 2003)
In addition the originalSclRevision is mandatory (as per definition in table 10) when originalSclVersion is set. In case of edition 1 IED, the originalSclRevision shall not be mandatory.
Another point is to indicate that these attributes are mandatory in an SCD to allow mixed environments.
Discussion
Created
Status
07 Jul 15
In Force (green)
In principle accepted. Text modified as follows:
These attributes are set by the IED tool when creating the ICD / IID file, and kept within an SCD file. If they are not provided in the ICD / IID file, the system configurator tool might determine it from the SCL version of the first imported ICD or IID file for this IED type.