Within the directory the following reusable objects (RO) can be created:

• contacts
• extents
• formats 

1. User creates reusable object (RO)
2. User sends email to geocat@swisstopo.ch to indicate RO.
3. Team geocat.ch validates new RO.

If below listed requirements are met, the validated RO are available to all geocat.ch-partners. 

1. contacts

• Ensure, the contact doesn't exist yet.
• A contact has to contain the following information: name and first name OR name of the organisation, address, phone number and/or email address. 

2. extents

• Ensure the extent doesn't exis yet
• An extent has to contain the following information: identifier, description, geometry.
• The extents identifier has to start with a capital letter. 
• The extents identifier has to contain a place name. Additional, descriptive words can be added, e.g. Zurich (Lake), Switzerland (map, 1:300'000), Fribourg (Canton, Prealps). 

3. Formats

• Ensure the format doesn't exist yet.
• A format has to contain the following information: Name and version (in brackets).
• If version unknown, add hyphen: (-).
• If no format can be specified: "n/a"