Prior to each year end, Microsoft releases the YEUpdates necessary if there are any changes to 1099 or W2 forms. The YE2018Update instructions and required download files are listed here.
There is also the Year-End-Closing documentation to lead you through your year end processing.
2019 Year End Updates
o Microsoft Dynamics SL does not include a Form W-4 report.
o Microsoft Dynamics SL will make changes in the Payroll module to support the current proposed IRS Form W-4 changes.
o Based on the current IRS information, there will also be changes to the W-2 Forms.
These year-end updates will be made available for the currently supported versions of Microsoft Dynamics SL 2015 and SL 2018 on CustomerSource next week.