All of the data requests we make to Workday are in the form of SOAP requests, except for Time Off data. Workday only supports the full breadth of Time Off data through their REST API, which requires a different set of credentials (OAuth).
If you would like your customers to be able to provide OAuth credentials:
Please reach out to [email protected] to get this feature added to your Merge account.
Once this feature is enabled, your customers will need to follow our Accessing Time Off Data From Workday to properly link a Workday account with Time Off Permissions.
If you face any issues during this process, please don't hesitate to reach out to us!