can we attach a fast formula to a date column on the compensation grade?

Summary:

I attached a fast formula to derive a custom seniority date value to the seeded Hire date column on the Compensation grid. Return value is date.

I get the following error when testing the fast formula using formula tester. can we attach a fast formula to a date column on the compensation grade?

CMP_CWB_UTILS.formula_tester_setupThe
fast formula has returned an invalid value.<br>Assignment Id:
30009700001333x, <br>Item Name: StartDate,<br> Data Type:
Date,<br> Return Value: 2010-05-03T00:00:00.000Z

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