USC-1 Establish a system of control

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Establish a system of control

These use cases relate to implementing policy decisions in the application.

Establish a system of intellectual control

Implement an arrangement policy

Implement an arrangement policy
Summary	ID number	1.2.1
	Overview	An institution establishes its arrangement policy and customizes the application to implement it.
	Primary actor	Institution.
	Secondary actor	Administrator.
Description	Preconditions	n/a
	Trigger	n/a
	Successful outcome	Application customized so that institution's policy determines options for users when specifying "Level of description".
	Main scenario	Scenario A: 1. Institution establishes the highest level of arrangement it will employ. E.g. Fonds, series, record group established as highest level. 2. Institution establishes the number of levels of arrangement it will employ. E.g. no sub-fonds, no more than three series levels (series, sub- and sub-sub-series). 3. Administrator edits the default "Levels of description" taxonomy shipped with ICA-AtoM, so that drop-down lists show only levels and terms allowed by policy.
	Exceptions / variations	Scenario B: Institution changes policy and for a transitional period retains old data values in the application (pending conversion) but allows users to use only new values. E.g. application contains descriptions registered as "Record group" but term no longer allowed for new descriptions. As of version 0.6, ICA-AtoM cannot accommodate this scenario. A term cannot be deleted from a taxonomy if other records are already registered to it. In a future release, it will be possible to make taxonomy terms "inactive" so that data integrity is protected, while drop-down list for on-going data entry show only the preferred terms.
Requirements	Functional requirements	FNC-1.2.1 Describe material at multiple levels of arrangement FNC-1.2.2 Establish the highest level of arrangement FNC-1.2.3 Establish the number of levels of arrangement
	Metadata requirements	MTD-1.1.3 Indication the level of description
	Technical requirements
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