The relation between the level of description according to RiC between the series and the document

[Ivana]

Dear group, 

I am currently working on adapting an old finding aid that was created according to the ISAD(G) while following the recommendations of the Records in Contexts (RiC) standard. The archival fonds has been organised according to ISAD(G) principles into series, sub-series, and documents. While reviewing the finding aid, I noticed a case where one of the series in the fonds contains only a single document. I would like to know whether I can classify this entity as a document instead of referring to it as a series, and state that it is equivalent to the other series within the collection. Can I treat a series and a document as entities of the same level (equivalent) in an archival fonds?

I can give you some examples that I have:

Old:

1. Ministry of Health (archival fonds)

1.1. Administration and General Affairs of the Ministry of Health (series)

1.1.   Circulars, Orders, and Regulations of the Ministry of Health (series)

1.2.   The Files of the Presidency of the Ministry of Health (series) contains a single document

1.3.   General Correspondence of the Ministry of Health (series)

Question:

1. Ministry of Health (archival fonds)

1.1. Administration and General Affairs of the Ministry of Health (series)

1.1.   Circulars, Orders, and Regulations of the Ministry of Health (series)

1.2.   The Files of the Presidency of the Ministry of Health (document)

1.3.   General Correspondence of the Ministry of Health (series)

Thanks for your help!

Kind regards,

Ivana