# PreCacheSession (Input)

The PreCacheSession object is submitted as part of the PreCacheSession request message (input).

Parameter | Type | Description
--- | --- | ---
accountId | string | An element indicating the Administration account to associate the request.
docs | ArrayOfDocument | This is a list of documents that you want to seed into the DocViewer cache. The Id specified of each document can be in the following format: expere://ORG.CustomOrg/PKGD.SampleDocument.
packages | ArrayOfPackage | Either this argument or docs must be passed in. This is the list of packages that will be seeded into the DocViewer cache. The package Ids, like document Ids, should be in the following format: expere:// ORG.CustomOrg/PKG.SamplePackage.