Validate an external payroll

Runs the checks that approving an external payroll runs, without approving the payroll. Use it to find problems with a draft external payroll before you approve it. It does not approve the payroll or change its status.

Validate doesn't recalculate the payroll. Use it to check for errors quickly while you fix a payroll, and use preview to review calculated amounts before you approve.

If every check passes, the response is the external payroll object. If any check fails, the response is a 400 validation_error, with one entry in input_errors for each problem found.

Validate does not run the negative quarter-to-date tax check. That check runs only when you approve, so an approve request can still fail after a validate request succeeds.