Collections Management in SPLA for Microsoft Dynamics GP 2013 This makes me feel MUCH better.
Collections Management in SPLA for Microsoft Dynamics GP 2013 – Inside Microsoft Dynamics GP – Site Home – MSDN Blogs
Payables & ReceivablesMicrosoft & the GP EcosystemGP 2013
Archived post from 2012. Dynamics GP and the links it points to have changed since; check current documentation before relying on version-specific steps.