Questions about example sentences with, and the definition and usage of "Oversight"

A: An oversight means a mistake …you made a mistake or forgot to do something you should have done.

So, when you correct an oversight, you correct your mistake, or you do what you forgot to do

A: something you missed

A: It has two main meanings.

On one hand, it can me "supervision" more or less. For example, in the American government, the "House Oversight Committee" is the committee responsible for overseeing, or supervising, the government and making sure everyone is behaving properly;

"Oversight" can also mean "something that was not noticed". For example, "The typo on the document was an oversight" means "We didn't notice the typo on the document".

A: That the regulations/ policies need to be changed to be more beneficial in the future and to prevent mistakes being made in the future.

A:
"Oversight means you did something wrong but you did so unintentionally".

1. William was angered and embarrassed by his oversight.

2. He had simply missed Parsons out by an oversight.

3. I meant to invite all of my friends to the party. Unintentionally, I forgot to invite you. Sorry, that was an oversight.

A: @Garciadanieltsr

Example.

I meant to invite all of my friends to the party. Unintentionally, I forgot to invite you. Sorry, that was an oversight.

A: It had been left out due to an oversight on the company’s part.
Without proper oversight, the project will be disorganised.

Oversight can mean “forgotten because of negligence, incompetence, or human error,” or it can refer to looking after and managing something. EG: “I will oversee the building of the house.”
“She oversaw her sons’ efforts to learn how to drive.”

A: oversight means an unintentional failure to notice or do something. and supervision means the action of supervising someone or something.

A: @dvaoline: Oversight means you did something wrong but you did so unintentionally.

Mistake means you knew what you were doing but it was the wrong thing to do.

A: You're thinking of "oversee" and "supervise" :) the past tense of oversee would be oversaw.

There is no difference between those two :)

A: × Sorry for the oversight!, they're 15 euros not 20!
✓ Sorry for the oversight; they're 15 euros not 20.

Your sentence is perfect except for the punctuation.
You can't use !, together.
And you can't use a comma (,), but you can use a semicolon (;).
You don't need exclamation marks in this sentence, but if you want to use them you can say:

Sorry for the oversight; they're 15 euros not 20.
Sorry for the oversight; they're 15 euros not 20!
Sorry for the oversight! They're 15 euros not 20!

A: She says “wield”.

A: I'm sorry; it was my fault.

I'm sorry. My mistake.

A: We have made an oversight with the order for PO#OS34578 regarding the product. If you can add this item to the next shipment with PO #OS34468, please let us know.
We will send you a revised order sheet after receiving approval from you.
We look forward to hearing from you soon.