Submission is a duplicate of one that was previously received

[acook]

We've had over a dozen returns get rejected from efile with the message (10) Submission is a duplicate of one that was previously received. I find this hard to believe that all of our client rejects have had identity theft. Any suggestions? Software glitch? we've tried updates and tech support and nothing.

[sjrcpa]

Have IT check to see if your systems have been breached.

[Dusty2]

Did you file an extension for them?  If so did you turn the extension off before regular efiling?

[Just-Lisa-Now-]

Yep, Id be on he phone to my cyber insurance company ASAP.

[ptax255]

Did you find a solution? I am having a similar issue when I look at EF clients tab. I know some of them I submitted, but they say not e-filed. When I try to e-file again this error pops up.