Foundation Data Model (FDM) Bootcamp Series
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Foundation Data Model (FDM) Nano Learning
Foundation Data Model Nano Learning
Foundation Data Model (FDM) Legacy Crosswalks
Understanding the Shift from FAS to Workday
Workday's Foundation Data Model (FDM) represents a significant shift from the legacy Financial Accounting System (FAS) and its chart of accounts structure. In Workday, worktags have replaced the traditional use of account codes and organization codes, offering more flexibility, transparency, and consistency in how financial data is classified and reported.
To help users understand this transition, we’ve created a comparison of key differences between the FAS chart of accounts and Workday worktags, including terminology changes, structural updates, and examples of how transactions are coded.
View the comparison table: Key Concepts: Legacy FAS vs. Workday Worktags (Knowledge Article)
This resource is especially helpful for users familiar with the legacy system who are adjusting to the new FDM structure in Workday.
Legacy FAS Budget to Workday Worktag Mapping
As part of the University of Washington’s transition from the legacy Financial Accounting System (FAS) to Workday Finance, each legacy FAS budget number was mapped to a corresponding set of Workday worktags.
These mappings were created for conversion purposes only and reflect the system configuration as of June 30, 2023, the go-live date for Workday Finance. Since go-live, some worktag assignments have been updated to better reflect current operational and reporting needs. Users should not rely on this mapping for ongoing transactional guidance without validating current Worktag structures.
View the Legacy FAS Budgets to Workday Worktag Mapping (Knowledge Article)
GASB 103 Ledger Alignment
As part of the GASB 103 alignment, a small subsection of Ledgers, mainly in the Non-Operating Revenue and Expenses section of the enterprise financials, will be replaced with new Ledgers. The old Ledgers can continue being used through the end of FY26 but will have the names appended with "(FY24 and Prior)". Additionally, any associated Revenue or Spend Categories will remain the same and will be used with the replacement Ledgers as of 7/1/26. Please reach out to the UCO - Financial Reporting team if you have questions over the GASB 103 impact.
View the Pre-GASB 103 to Post-GASB 103 Crosswalk (Knowledge Article)