IDocs have on the one hand links to each other, such as the link between inbound and outbound IDOcs in an ALE scenario. On the other hand, IDocs are also linked to objects in the applications, for example with a document which was created per ALE. Both links are evaluated by the DRB.
There is no access to the DRB based on IDocs. You can only find IDocs using objects which are linked with them.
To display archived IDocs (archiving object IDOC) you must have an active and structured archive information structure for field catalog SAP_IDOC_001. There are two options for determining links from and to IDocs:
Always archive IDocs with their links.