[EATaxPro]

I prepared a 2020 Form 1040-SR for a client, and the copy of the tax return that I gave to the client shows this was the case. I just realized that when I prepared the client’s invoice on my QuickBooks, I referred to the preparation and e-filing of the return as a 2020 Form 1040 instead of a 2020 Form 1040-SR. I already e-filed the client’s 2020 Form 1040-SR today, and I have been paid for my services. Should I communicate anything to my client in relation to this issue now? Should I just ignore it?

[Taxaway]

You could communicate it in larger font and fewer words.
What's the substantive difference?

[CornerstoneCPA]

It is not an issue in my opinion. None of my engagements or invoices ever reference a 1040-SR. It is always just 1040 and then whatever the state equivalents are called. My engagement letters do not even list states or individual returns, only that I will prepare tax returns for states and localities communicated to me by the client.