Retirement tax questions

Big Mistake on my part - Excess Distribution should be Excess Accumulation.    I have an Excess Accumulation for tax year 2016.   I have prepared a Form 5329 requesting penalty waiver and will receive the 2016 Excess Accumulation later in 2017.    How and where do I self-report the 2016 Excess Accumulation on my 2016 tax return still to be submitted?