Retirement tax questions

Oh OK thank you, I just did some research on 5330 and now understand it's a completely separate form to file. I was under the impression it was to be submitted as part of the income tax filings. 

 

So once 5330 is filed and penalties paid, do I need to file an amended 2018 return? And/or do I need to indicate anything the not-yet-filed 2019 return about 5330? 

 

Does filing 5330 allow me to use the "carry forward" approach and assign the excess 2018 contribution as part of the 2019 contributions (which have the room for carrying forward the excess)? 

 

I assume i need to account for the excess somewhere with the IRS in addition to the 5330, or is that not the case?