Microsoft Dynamics GP Year End Release 2012: General Ledger Year End Close This is next installment in the year end series from Microsoft.
Microsoft Dynamics GP Year End Release 2012: General Ledger Year End Close – Dynamics GP Support and Services Blog – GP Technical Blogs – Microsoft Dynamics Community
Microsoft & the GP EcosystemYear-End & 1099General Ledger & Financials
Archived post from 2012. Dynamics GP and the links it points to have changed since; check current documentation before relying on version-specific steps.