Mariano looks at options for Getting the Next Voucher Number for a Payables Transaction Integration in his new post.
The Dynamics GP Blogster: Getting the Next Voucher Number for a Payables Transaction Integration
Payables & ReceivablesDevelopment & IntegrationMicrosoft & 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.
