If the filing threshold has been met, or in other words, if, independent of the portability election, the estate is required to file an estate tax return based on the total value of the gross estate and adjusted taxable gifts, no extension of time to elect portability is available and Revenue Procedure 2017-34 does not apply.
Verification is the process of assuring that the product satisfies the conditions before work starts. Validation is the process of assuring that the product meets the specified requirements at the end of the development phase. In other words, to make sure the product is designed in accordance with customer's requirements.
Defining Qualification, Verification, and Validation. Q: I understand the hierarchy, but I would be hard pressed, if asked, to give a clear definition of the terms: qualification, verification, and validation.