Why did my LinkedIn outreach through Unipile suddenly drop?
The Unipile help pages give 4 common reasons. The first to rule out: LinkedIn caps invitations, and once the cap is reached further invitations are refused with an error.
Is it broken, or just quiet?
A number can fall because fewer people came, or because something stopped counting them. Below are the causes the Unipile help pages give, and how to check each one yourself.
What causes it?
LinkedIn caps invitations, and once the cap is reached further invitations are refused with an error.
In the Unipile help:
If you hit the invitation limit, LinkedIn will return a specific error: 422 / cannot_resend_yet.
Provider Limits and Restrictions, read 2026-11-12.The ceiling on LinkedIn outreach comes from LinkedIn itself, the same as when sending inside LinkedIn.
In the Unipile help:
We don’t enforce any limits on our side, so you’ll have the exact same limit in the LinkedIn UI.
Provider Limits and Restrictions, read 2026-11-12.When an account's sign-in details are no longer valid, its sync can stop, and new activity is not picked up.
In the Unipile help:
Synchronization of accounts has been interrupted due to invalid or missing credentials required for retrieving new data.
Account status updates, read 2026-11-12.Requests beyond LinkedIn's limits come back as errors, so activity can stop partway through a day.
In the Unipile help:
Exceeding LinkedIn’s limits will result in an HTTP 429 or 500 error.
Provider Limits and Restrictions, read 2026-11-12.
How do I check it myself?
Count activity for each LinkedIn account on its own, since each account has its own limits.
In the Unipile help:
These limits are defined per LinkedIn account.
Provider Limits and Restrictions, read 2026-11-12.Check the final result of each invitation rather than only that it started, since a limit error shows up at the end.
In the Unipile help:
The LinkedIn error message only appears at the last step, so you can still start the process and think the invitation will be sent, but it fails at the end.
Provider Limits and Restrictions, read 2026-11-12.
How does Unipile work with Feder?
- Connect Unipile to Feder and it joins your Reach apps.
- When you connect Unipile, Feder checks the connection straight away and shows Connected only when that check passes. If a reading cannot be taken later, Feder shows it as not read, never as zero.
Some numbers are too quiet to judge daily, such as a form filled in a few times a week. Until there is enough of your own history to judge a change, Feder says it is still learning and scores nothing, rather than guessing.
See whether you can trust the numbers in Unipile, one of your Reach apps. Feder only reads. It never changes anything in Unipile.
What else goes wrong with these numbers?
- Why do accepted LinkedIn invitations show up late in Unipile?Unipile
- Why did the number of new conversations in Unipile suddenly jump?Unipile
- Why did Google Analytics stop collecting data?Google Analytics
- Why aren't my key events showing in Google Analytics?Google Analytics
- Why does Google Analytics show (not set)?Google Analytics
See every question.
Where do these answers come from?
Every cause and check on this page comes from the Unipile help pages, quoted above with the date we read them. Last reviewed 2026-11-12. We read them again by 2027-11-12. If one changes, this page changes or comes down.