Work with Main entries

Entries are defined in a DID Source. An Entry can only be used in an ITP Model if:

1. it is a Main entry of a DID the ITP Model is based upon, or
2. it is used as a Subentry of the Entry it is a Subentry of.

To be able to traverse through the database in an ITP Model (via the Entry-Subentry relations in the DID) a starting point is needed. In ITP terms these starting points are called Main entries. Only Entries from DID Sources linked to the DID may be registered as Main entries for this DID. Beware that if a link between a DID and DID Source is deleted the Main entries are not affected and should be deleted explicitly.