The phrase "accidentally included" is correct and usable in written English.
It can be used when referring to something that was unintentionally added or incorporated into a document, list, or collection.
Example: "The report contained several errors, and one of the mistakes was that an outdated version of the data was accidentally included."
Alternatives: "unintentionally added" or "inadvertently included".
That update accidentally included conflicting versions of the amendment.
The fact that she accidentally included you only compounds her error.
A13 An Error, 120 Million Times A firm hired by the government to print a mailing that was sent to every household in the United States accidentally included an extra digit at the beginning of every address.
At first, the company blamed a programming mistake by an engineer, saying his experimental software was accidentally included in Street View — and stressing that the data was never intended for or used in any Google products.
The name pyroxene is derived from the Greek pyro, meaning "fire," and xenos, meaning "stranger," and was given by Haüy to the greenish crystals found in many lavas which he considered to have been accidentally included there.
When German regulators forced the company to admit that the cars were sweeping up unencrypted Internet data from wireless networks, the company blamed a programming mistake where an engineer's experimental software was accidentally included in Street View.
OopsHa Did you accidentally include Amy in a group text about how her new boyfriend is "a pretentious dud"?
Before my articles with Donovan were published, I went over parts of them with our sources to make sure that we didn't accidentally include identifying details.
He said blocking access to piracy-related sites carries "the real risk of human error –accidentally including an IP address which should not have been targeted" and denying web users access to legitimate sites.
Msgr. Francis J. Maniscalco, director of communications for the United States Conference of Catholic Bishops, said, "Mainly the issue is that since so many of these cases are based on allegations that go back several decades and haven't been proven, there's a concern about not accidentally including people who might be innocent of the charge".
But they went further, proposing a moratorium on therapies that might change human DNA accidentally, including methods used by some reproductive medicine clinics.
