The Microsoft Support and Services blog continues their look at year end with Analytical Accounting Year End Close
Microsoft Dynamics GP Year End Release 2011 – Analytical Accounting Year End Close – Dynamics GP Support and Services Blog
General Ledger & FinancialsYear-End & 1099Microsoft & the GP Ecosystem
Archived post from 2011. Dynamics GP and the links it points to have changed since; check current documentation before relying on version-specific steps.